![]() |
Metamath
Proof Explorer Theorem List (p. 433 of 476) | < Previous Next > |
Bad symbols? Try the
GIF version. |
||
Mirrors > Metamath Home Page > MPE Home Page > Theorem List Contents > Recent Proofs This page: Page List |
Color key: | ![]() (1-30098) |
![]() (30099-31621) |
![]() (31622-47564) |
Type | Label | Description |
---|---|---|
Statement | ||
Theorem | in2 43201 | The virtual deduction introduction rule of converting the end virtual hypothesis of 2 virtual hypotheses into an antecedent. (Contributed by Alan Sare, 21-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) ⇒ ⊢ ( 𝜑 ▶ (𝜓 → 𝜒) ) | ||
Theorem | int2 43202 | The virtual deduction introduction rule of converting the end virtual hypothesis of 2 virtual hypotheses into an antecedent. Conventional form of int2 43202 is ex 413. (Contributed by Alan Sare, 23-Apr-2015.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( ( 𝜑 , 𝜓 ) ▶ 𝜒 ) ⇒ ⊢ ( 𝜑 ▶ (𝜓 → 𝜒) ) | ||
Theorem | iin2 43203 | in2 43201 without virtual deductions. (Contributed by Alan Sare, 20-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) ⇒ ⊢ (𝜑 → (𝜓 → 𝜒)) | ||
Theorem | in2an 43204 | The virtual deduction introduction rule converting the second conjunct of the second virtual hypothesis into the antecedent of the conclusion. expd 416 is the non-virtual deduction form of in2an 43204. (Contributed by Alan Sare, 30-Jun-2012.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , (𝜓 ∧ 𝜒) ▶ 𝜃 ) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ (𝜒 → 𝜃) ) | ||
Theorem | in3 43205 | The virtual deduction introduction rule of converting the end virtual hypothesis of 3 virtual hypotheses into an antecedent. (Contributed by Alan Sare, 12-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 , 𝜒 ▶ 𝜃 ) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ (𝜒 → 𝜃) ) | ||
Theorem | iin3 43206 | in3 43205 without virtual deduction connectives. Special theorem needed for the Virtual Deduction translation tool. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → (𝜒 → 𝜃))) ⇒ ⊢ (𝜑 → (𝜓 → (𝜒 → 𝜃))) | ||
Theorem | in3an 43207 | The virtual deduction introduction rule converting the second conjunct of the third virtual hypothesis into the antecedent of the conclusion. exp4a 432 is the non-virtual deduction form of in3an 43207. (Contributed by Alan Sare, 25-Jun-2012.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 , (𝜒 ∧ 𝜃) ▶ 𝜏 ) ⇒ ⊢ ( 𝜑 , 𝜓 , 𝜒 ▶ (𝜃 → 𝜏) ) | ||
Theorem | int3 43208 | The virtual deduction introduction rule of converting the end virtual hypothesis of 3 virtual hypotheses into an antecedent. Conventional form of int3 43208 is 3expia 1121. (Contributed by Alan Sare, 13-Jun-2015.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( ( 𝜑 , 𝜓 , 𝜒 ) ▶ 𝜃 ) ⇒ ⊢ ( ( 𝜑 , 𝜓 ) ▶ (𝜒 → 𝜃) ) | ||
Theorem | idn2 43209 | Virtual deduction identity rule which is idd 24 with virtual deduction symbols. (Contributed by Alan Sare, 21-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜓 ) | ||
Theorem | iden2 43210 | Virtual deduction identity rule. simpr 485 in conjunction form Virtual Deduction notation. (Contributed by Alan Sare, 5-Sep-2016.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( ( 𝜑 , 𝜓 ) ▶ 𝜓 ) | ||
Theorem | idn3 43211 | Virtual deduction identity rule for three virtual hypotheses. (Contributed by Alan Sare, 11-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 , 𝜒 ▶ 𝜒 ) | ||
Theorem | gen11 43212* | Virtual deduction generalizing rule for one quantifying variable and one virtual hypothesis. alrimiv 1930 is gen11 43212 without virtual deductions. (Contributed by Alan Sare, 21-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) ⇒ ⊢ ( 𝜑 ▶ ∀𝑥𝜓 ) | ||
Theorem | gen11nv 43213 | Virtual deduction generalizing rule for one quantifying variable and one virtual hypothesis without distinct variables. alrimih 1826 is gen11nv 43213 without virtual deductions. (Contributed by Alan Sare, 12-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → ∀𝑥𝜑) & ⊢ ( 𝜑 ▶ 𝜓 ) ⇒ ⊢ ( 𝜑 ▶ ∀𝑥𝜓 ) | ||
Theorem | gen12 43214* | Virtual deduction generalizing rule for two quantifying variables and one virtual hypothesis. gen12 43214 is alrimivv 1931 with virtual deductions. (Contributed by Alan Sare, 2-May-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) ⇒ ⊢ ( 𝜑 ▶ ∀𝑥∀𝑦𝜓 ) | ||
Theorem | gen21 43215* | Virtual deduction generalizing rule for one quantifying variables and two virtual hypothesis. gen21 43215 is alrimdv 1932 with virtual deductions. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ ∀𝑥𝜒 ) | ||
Theorem | gen21nv 43216 | Virtual deduction form of alrimdh 1866. (Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → ∀𝑥𝜑) & ⊢ (𝜓 → ∀𝑥𝜓) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ ∀𝑥𝜒 ) | ||
Theorem | gen31 43217* | Virtual deduction generalizing rule for one quantifying variable and three virtual hypothesis. gen31 43217 is ggen31 43141 with virtual deductions. (Contributed by Alan Sare, 22-Jun-2012.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 , 𝜒 ▶ 𝜃 ) ⇒ ⊢ ( 𝜑 , 𝜓 , 𝜒 ▶ ∀𝑥𝜃 ) | ||
Theorem | gen22 43218* | Virtual deduction generalizing rule for two quantifying variables and two virtual hypothesis. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ ∀𝑥∀𝑦𝜒 ) | ||
Theorem | ggen22 43219* | gen22 43218 without virtual deductions. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) ⇒ ⊢ (𝜑 → (𝜓 → ∀𝑥∀𝑦𝜒)) | ||
Theorem | exinst 43220 | Existential Instantiation. Virtual deduction form of exlimexi 43120. (Contributed by Alan Sare, 21-Apr-2013.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜓 → ∀𝑥𝜓) & ⊢ ( ∃𝑥𝜑 , 𝜑 ▶ 𝜓 ) ⇒ ⊢ (∃𝑥𝜑 → 𝜓) | ||
Theorem | exinst01 43221 | Existential Instantiation. Virtual Deduction rule corresponding to a special case of the Natural Deduction Sequent Calculus rule called Rule C in [Margaris] p. 79 and E ∃ in Table 1 on page 4 of the paper "Extracting information from intermediate T-systems" (2000) presented at IMLA99 by Mauro Ferrari, Camillo Fiorentini, and Pierangelo Miglioli. (Contributed by Alan Sare, 21-Apr-2013.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ∃𝑥𝜓 & ⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ (𝜑 → ∀𝑥𝜑) & ⊢ (𝜒 → ∀𝑥𝜒) ⇒ ⊢ ( 𝜑 ▶ 𝜒 ) | ||
Theorem | exinst11 43222 | Existential Instantiation. Virtual Deduction rule corresponding to a special case of the Natural Deduction Sequent Calculus rule called Rule C in [Margaris] p. 79 and E ∃ in Table 1 on page 4 of the paper "Extracting information from intermediate T-systems" (2000) presented at IMLA99 by Mauro Ferrari, Camillo Fiorentini, and Pierangelo Miglioli. (Contributed by Alan Sare, 21-Apr-2013.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ ∃𝑥𝜓 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ (𝜑 → ∀𝑥𝜑) & ⊢ (𝜒 → ∀𝑥𝜒) ⇒ ⊢ ( 𝜑 ▶ 𝜒 ) | ||
Theorem | e1a 43223 | A Virtual deduction elimination rule. syl 17 is e1a 43223 without virtual deductions. (Contributed by Alan Sare, 11-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ (𝜓 → 𝜒) ⇒ ⊢ ( 𝜑 ▶ 𝜒 ) | ||
Theorem | el1 43224 | A Virtual deduction elimination rule. syl 17 is el1 43224 without virtual deductions. (Contributed by Alan Sare, 23-Apr-2015.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ (𝜓 → 𝜒) ⇒ ⊢ ( 𝜑 ▶ 𝜒 ) | ||
Theorem | e1bi 43225 | Biconditional form of e1a 43223. sylib 217 is e1bi 43225 without virtual deductions. (Contributed by Alan Sare, 15-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ (𝜓 ↔ 𝜒) ⇒ ⊢ ( 𝜑 ▶ 𝜒 ) | ||
Theorem | e1bir 43226 | Right biconditional form of e1a 43223. sylibr 233 is e1bir 43226 without virtual deductions. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ (𝜒 ↔ 𝜓) ⇒ ⊢ ( 𝜑 ▶ 𝜒 ) | ||
Theorem | e2 43227 | A virtual deduction elimination rule. syl6 35 is e2 43227 without virtual deductions. (Contributed by Alan Sare, 21-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ (𝜒 → 𝜃) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) | ||
Theorem | e2bi 43228 | Biconditional form of e2 43227. syl6ib 250 is e2bi 43228 without virtual deductions. (Contributed by Alan Sare, 10-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ (𝜒 ↔ 𝜃) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) | ||
Theorem | e2bir 43229 | Right biconditional form of e2 43227. syl6ibr 251 is e2bir 43229 without virtual deductions. (Contributed by Alan Sare, 29-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ (𝜃 ↔ 𝜒) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) | ||
Theorem | ee223 43230 | e223 43231 without virtual deductions. (Contributed by Alan Sare, 12-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → (𝜓 → 𝜃)) & ⊢ (𝜑 → (𝜓 → (𝜏 → 𝜂))) & ⊢ (𝜒 → (𝜃 → (𝜂 → 𝜁))) ⇒ ⊢ (𝜑 → (𝜓 → (𝜏 → 𝜁))) | ||
Theorem | e223 43231 | A virtual deduction elimination rule. (Contributed by Alan Sare, 12-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) & ⊢ ( 𝜑 , 𝜓 , 𝜏 ▶ 𝜂 ) & ⊢ (𝜒 → (𝜃 → (𝜂 → 𝜁))) ⇒ ⊢ ( 𝜑 , 𝜓 , 𝜏 ▶ 𝜁 ) | ||
Theorem | e222 43232 | A virtual deduction elimination rule. (Contributed by Alan Sare, 12-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜏 ) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | e220 43233 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) & ⊢ 𝜏 & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee220 43234 | e220 43233 without virtual deductions. (Contributed by Alan Sare, 12-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → (𝜓 → 𝜃)) & ⊢ 𝜏 & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e202 43235 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ 𝜃 & ⊢ ( 𝜑 , 𝜓 ▶ 𝜏 ) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee202 43236 | e202 43235 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ 𝜃 & ⊢ (𝜑 → (𝜓 → 𝜏)) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e022 43237 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 , 𝜒 ▶ 𝜃 ) & ⊢ ( 𝜓 , 𝜒 ▶ 𝜏 ) & ⊢ (𝜑 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜓 , 𝜒 ▶ 𝜂 ) | ||
Theorem | ee022 43238 | e022 43237 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → (𝜒 → 𝜃)) & ⊢ (𝜓 → (𝜒 → 𝜏)) & ⊢ (𝜑 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜓 → (𝜒 → 𝜂)) | ||
Theorem | e002 43239 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ 𝜓 & ⊢ ( 𝜒 , 𝜃 ▶ 𝜏 ) & ⊢ (𝜑 → (𝜓 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜒 , 𝜃 ▶ 𝜂 ) | ||
Theorem | ee002 43240 | e002 43239 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ 𝜓 & ⊢ (𝜒 → (𝜃 → 𝜏)) & ⊢ (𝜑 → (𝜓 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜒 → (𝜃 → 𝜂)) | ||
Theorem | e020 43241 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 , 𝜒 ▶ 𝜃 ) & ⊢ 𝜏 & ⊢ (𝜑 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜓 , 𝜒 ▶ 𝜂 ) | ||
Theorem | ee020 43242 | e020 43241 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → (𝜒 → 𝜃)) & ⊢ 𝜏 & ⊢ (𝜑 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜓 → (𝜒 → 𝜂)) | ||
Theorem | e200 43243 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ 𝜃 & ⊢ 𝜏 & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee200 43244 | e200 43243 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ 𝜃 & ⊢ 𝜏 & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e221 43245 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) & ⊢ ( 𝜑 ▶ 𝜏 ) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee221 43246 | e221 43245 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → (𝜓 → 𝜃)) & ⊢ (𝜑 → 𝜏) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e212 43247 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 ▶ 𝜃 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜏 ) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee212 43248 | e212 43247 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → 𝜃) & ⊢ (𝜑 → (𝜓 → 𝜏)) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e122 43249 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 , 𝜒 ▶ 𝜃 ) & ⊢ ( 𝜑 , 𝜒 ▶ 𝜏 ) & ⊢ (𝜓 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜒 ▶ 𝜂 ) | ||
Theorem | e112 43250 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜃 ▶ 𝜏 ) & ⊢ (𝜓 → (𝜒 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜃 ▶ 𝜂 ) | ||
Theorem | ee112 43251 | e112 43250 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ (𝜑 → 𝜒) & ⊢ (𝜑 → (𝜃 → 𝜏)) & ⊢ (𝜓 → (𝜒 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜃 → 𝜂)) | ||
Theorem | e121 43252 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 , 𝜒 ▶ 𝜃 ) & ⊢ ( 𝜑 ▶ 𝜏 ) & ⊢ (𝜓 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜒 ▶ 𝜂 ) | ||
Theorem | e211 43253 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 ▶ 𝜃 ) & ⊢ ( 𝜑 ▶ 𝜏 ) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee211 43254 | e211 43253 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → 𝜃) & ⊢ (𝜑 → 𝜏) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e210 43255 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 ▶ 𝜃 ) & ⊢ 𝜏 & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee210 43256 | e210 43255 without virtual deductions. (Contributed by Alan Sare, 14-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → 𝜃) & ⊢ 𝜏 & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e201 43257 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ 𝜃 & ⊢ ( 𝜑 ▶ 𝜏 ) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜂 ) | ||
Theorem | ee201 43258 | e201 43257 without virtual deductions. (Contributed by Alan Sare, 14-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ 𝜃 & ⊢ (𝜑 → 𝜏) & ⊢ (𝜒 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜓 → 𝜂)) | ||
Theorem | e120 43259 | A virtual deduction elimination rule. (Contributed by Alan Sare, 10-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 , 𝜒 ▶ 𝜃 ) & ⊢ 𝜏 & ⊢ (𝜓 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜒 ▶ 𝜂 ) | ||
Theorem | ee120 43260 | Virtual deduction rule e120 43259 without virtual deduction symbols. (Contributed by Alan Sare, 14-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ (𝜑 → (𝜒 → 𝜃)) & ⊢ 𝜏 & ⊢ (𝜓 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜒 → 𝜂)) | ||
Theorem | e021 43261 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 , 𝜒 ▶ 𝜃 ) & ⊢ ( 𝜓 ▶ 𝜏 ) & ⊢ (𝜑 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜓 , 𝜒 ▶ 𝜂 ) | ||
Theorem | ee021 43262 | e021 43261 without virtual deductions. (Contributed by Alan Sare, 14-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → (𝜒 → 𝜃)) & ⊢ (𝜓 → 𝜏) & ⊢ (𝜑 → (𝜃 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜓 → (𝜒 → 𝜂)) | ||
Theorem | e012 43263 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜓 , 𝜃 ▶ 𝜏 ) & ⊢ (𝜑 → (𝜒 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜓 , 𝜃 ▶ 𝜂 ) | ||
Theorem | ee012 43264 | e012 43263 without virtual deductions. (Contributed by Alan Sare, 14-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → 𝜒) & ⊢ (𝜓 → (𝜃 → 𝜏)) & ⊢ (𝜑 → (𝜒 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜓 → (𝜃 → 𝜂)) | ||
Theorem | e102 43265 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ 𝜒 & ⊢ ( 𝜑 , 𝜃 ▶ 𝜏 ) & ⊢ (𝜓 → (𝜒 → (𝜏 → 𝜂))) ⇒ ⊢ ( 𝜑 , 𝜃 ▶ 𝜂 ) | ||
Theorem | ee102 43266 | e102 43265 without virtual deductions. (Contributed by Alan Sare, 14-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ 𝜒 & ⊢ (𝜑 → (𝜃 → 𝜏)) & ⊢ (𝜓 → (𝜒 → (𝜏 → 𝜂))) ⇒ ⊢ (𝜑 → (𝜃 → 𝜂)) | ||
Theorem | e22 43267 | A virtual deduction elimination rule. (Contributed by Alan Sare, 2-May-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) & ⊢ (𝜒 → (𝜃 → 𝜏)) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜏 ) | ||
Theorem | e22an 43268 | Conjunction form of e22 43267. (Contributed by Alan Sare, 11-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 , 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜑 , 𝜓 ▶ 𝜃 ) & ⊢ ((𝜒 ∧ 𝜃) → 𝜏) ⇒ ⊢ ( 𝜑 , 𝜓 ▶ 𝜏 ) | ||
Theorem | ee22an 43269 | e22an 43268 without virtual deductions. (Contributed by Alan Sare, 8-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → (𝜓 → 𝜒)) & ⊢ (𝜑 → (𝜓 → 𝜃)) & ⊢ ((𝜒 ∧ 𝜃) → 𝜏) ⇒ ⊢ (𝜑 → (𝜓 → 𝜏)) | ||
Theorem | e111 43270 | A virtual deduction elimination rule (see syl3c 66). (Contributed by Alan Sare, 14-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 ▶ 𝜒 ) & ⊢ ( 𝜑 ▶ 𝜃 ) & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜑 ▶ 𝜏 ) | ||
Theorem | e1111 43271 | A virtual deduction elimination rule. (Contributed by Alan Sare, 6-Mar-2012.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 ▶ 𝜒 ) & ⊢ ( 𝜑 ▶ 𝜃 ) & ⊢ ( 𝜑 ▶ 𝜏 ) & ⊢ (𝜓 → (𝜒 → (𝜃 → (𝜏 → 𝜂)))) ⇒ ⊢ ( 𝜑 ▶ 𝜂 ) | ||
Theorem | e110 43272 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 ▶ 𝜒 ) & ⊢ 𝜃 & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜑 ▶ 𝜏 ) | ||
Theorem | ee110 43273 | e110 43272 without virtual deductions. (Contributed by Alan Sare, 22-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ (𝜑 → 𝜒) & ⊢ 𝜃 & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ (𝜑 → 𝜏) | ||
Theorem | e101 43274 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ 𝜒 & ⊢ ( 𝜑 ▶ 𝜃 ) & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜑 ▶ 𝜏 ) | ||
Theorem | ee101 43275 | e101 43274 without virtual deductions. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ 𝜒 & ⊢ (𝜑 → 𝜃) & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ (𝜑 → 𝜏) | ||
Theorem | e011 43276 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 ▶ 𝜒 ) & ⊢ ( 𝜓 ▶ 𝜃 ) & ⊢ (𝜑 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜓 ▶ 𝜏 ) | ||
Theorem | ee011 43277 | e011 43276 without virtual deductions. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → 𝜒) & ⊢ (𝜓 → 𝜃) & ⊢ (𝜑 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ (𝜓 → 𝜏) | ||
Theorem | e100 43278 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ 𝜒 & ⊢ 𝜃 & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜑 ▶ 𝜏 ) | ||
Theorem | ee100 43279 | e100 43278 without virtual deductions. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ 𝜒 & ⊢ 𝜃 & ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ (𝜑 → 𝜏) | ||
Theorem | e010 43280 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 ▶ 𝜒 ) & ⊢ 𝜃 & ⊢ (𝜑 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜓 ▶ 𝜏 ) | ||
Theorem | ee010 43281 | e010 43280 without virtual deductions. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → 𝜒) & ⊢ 𝜃 & ⊢ (𝜑 → (𝜒 → (𝜃 → 𝜏))) ⇒ ⊢ (𝜓 → 𝜏) | ||
Theorem | e001 43282 | A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ 𝜓 & ⊢ ( 𝜒 ▶ 𝜃 ) & ⊢ (𝜑 → (𝜓 → (𝜃 → 𝜏))) ⇒ ⊢ ( 𝜒 ▶ 𝜏 ) | ||
Theorem | ee001 43283 | e001 43282 without virtual deductions. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ 𝜓 & ⊢ (𝜒 → 𝜃) & ⊢ (𝜑 → (𝜓 → (𝜃 → 𝜏))) ⇒ ⊢ (𝜒 → 𝜏) | ||
Theorem | e11 43284 | A virtual deduction elimination rule. (Contributed by Alan Sare, 14-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 ▶ 𝜒 ) & ⊢ (𝜓 → (𝜒 → 𝜃)) ⇒ ⊢ ( 𝜑 ▶ 𝜃 ) | ||
Theorem | e11an 43285 | Conjunction form of e11 43284. (Contributed by Alan Sare, 15-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ ( 𝜑 ▶ 𝜒 ) & ⊢ ((𝜓 ∧ 𝜒) → 𝜃) ⇒ ⊢ ( 𝜑 ▶ 𝜃 ) | ||
Theorem | ee11an 43286 | e11an 43285 without virtual deductions. syl22anc 837 is also e11an 43285 without virtual deductions, exept with a different order of hypotheses. (Contributed by Alan Sare, 8-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ (𝜑 → 𝜒) & ⊢ ((𝜓 ∧ 𝜒) → 𝜃) ⇒ ⊢ (𝜑 → 𝜃) | ||
Theorem | e01 43287 | A virtual deduction elimination rule. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 ▶ 𝜒 ) & ⊢ (𝜑 → (𝜒 → 𝜃)) ⇒ ⊢ ( 𝜓 ▶ 𝜃 ) | ||
Theorem | e01an 43288 | Conjunction form of e01 43287. (Contributed by Alan Sare, 11-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 ▶ 𝜒 ) & ⊢ ((𝜑 ∧ 𝜒) → 𝜃) ⇒ ⊢ ( 𝜓 ▶ 𝜃 ) | ||
Theorem | ee01an 43289 | e01an 43288 without virtual deductions. sylancr 587 is also a form of e01an 43288 without virtual deduction, except the order of the hypotheses is different. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → 𝜒) & ⊢ ((𝜑 ∧ 𝜒) → 𝜃) ⇒ ⊢ (𝜓 → 𝜃) | ||
Theorem | e10 43290 | A virtual deduction elimination rule (see mpisyl 21). (Contributed by Alan Sare, 14-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ 𝜒 & ⊢ (𝜓 → (𝜒 → 𝜃)) ⇒ ⊢ ( 𝜑 ▶ 𝜃 ) | ||
Theorem | e10an 43291 | Conjunction form of e10 43290. (Contributed by Alan Sare, 15-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ ( 𝜑 ▶ 𝜓 ) & ⊢ 𝜒 & ⊢ ((𝜓 ∧ 𝜒) → 𝜃) ⇒ ⊢ ( 𝜑 ▶ 𝜃 ) | ||
Theorem | ee10an 43292 | e10an 43291 without virtual deductions. sylancl 586 is also e10an 43291 without virtual deductions, except the order of the hypotheses is different. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ (𝜑 → 𝜓) & ⊢ 𝜒 & ⊢ ((𝜓 ∧ 𝜒) → 𝜃) ⇒ ⊢ (𝜑 → 𝜃) | ||
Theorem | e02 43293 | A virtual deduction elimination rule. (Contributed by Alan Sare, 14-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 , 𝜒 ▶ 𝜃 ) & ⊢ (𝜑 → (𝜃 → 𝜏)) ⇒ ⊢ ( 𝜓 , 𝜒 ▶ 𝜏 ) | ||
Theorem | e02an 43294 | Conjunction form of e02 43293. (Contributed by Alan Sare, 15-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( 𝜓 , 𝜒 ▶ 𝜃 ) & ⊢ ((𝜑 ∧ 𝜃) → 𝜏) ⇒ ⊢ ( 𝜓 , 𝜒 ▶ 𝜏 ) | ||
Theorem | ee02an 43295 | e02an 43294 without virtual deductions. (Contributed by Alan Sare, 8-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (𝜓 → (𝜒 → 𝜃)) & ⊢ ((𝜑 ∧ 𝜃) → 𝜏) ⇒ ⊢ (𝜓 → (𝜒 → 𝜏)) | ||
Theorem | eel021old 43296 | el021old 43297 without virtual deductions. (Contributed by Alan Sare, 13-Jun-2015.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ((𝜓 ∧ 𝜒) → 𝜃) & ⊢ ((𝜑 ∧ 𝜃) → 𝜏) ⇒ ⊢ ((𝜓 ∧ 𝜒) → 𝜏) | ||
Theorem | el021old 43297 | A virtual deduction elimination rule. (Contributed by Alan Sare, 13-Jun-2015.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ ( ( 𝜓 , 𝜒 ) ▶ 𝜃 ) & ⊢ ((𝜑 ∧ 𝜃) → 𝜏) ⇒ ⊢ ( ( 𝜓 , 𝜒 ) ▶ 𝜏 ) | ||
Theorem | eel132 43298 | syl2an 596 with antecedents in standard conjunction form. (Contributed by Alan Sare, 26-Aug-2016.) |
⊢ (𝜑 → 𝜓) & ⊢ ((𝜒 ∧ 𝜃) → 𝜏) & ⊢ ((𝜓 ∧ 𝜏) → 𝜂) ⇒ ⊢ ((𝜑 ∧ 𝜒 ∧ 𝜃) → 𝜂) | ||
Theorem | eel000cT 43299 | An elimination deduction. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ 𝜓 & ⊢ 𝜒 & ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) ⇒ ⊢ (⊤ → 𝜃) | ||
Theorem | eel0TT 43300 | An elimination deduction. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.) |
⊢ 𝜑 & ⊢ (⊤ → 𝜓) & ⊢ (⊤ → 𝜒) & ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) ⇒ ⊢ 𝜃 |
< Previous Next > |
Copyright terms: Public domain | < Previous Next > |