| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > no2inds | Structured version Visualization version GIF version | ||
| Description: Double induction on surreals. The many substitution instances are to cover all possible cases. (Contributed by Scott Fenton, 22-Aug-2024.) |
| Ref | Expression |
|---|---|
| no2inds.1 | ⊢ (𝑥 = 𝑧 → (𝜑 ↔ 𝜓)) |
| no2inds.2 | ⊢ (𝑦 = 𝑤 → (𝜓 ↔ 𝜒)) |
| no2inds.3 | ⊢ (𝑥 = 𝑧 → (𝜃 ↔ 𝜒)) |
| no2inds.4 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜏)) |
| no2inds.5 | ⊢ (𝑦 = 𝐵 → (𝜏 ↔ 𝜂)) |
| no2inds.i | ⊢ ((𝑥 ∈ No ∧ 𝑦 ∈ No ) → ((∀𝑧 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))∀𝑤 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))𝜒 ∧ ∀𝑧 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))𝜓 ∧ ∀𝑤 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))𝜃) → 𝜑)) |
| Ref | Expression |
|---|---|
| no2inds | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → 𝜂) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2737 | . 2 ⊢ {〈𝑎, 𝑏〉 ∣ 𝑎 ∈ (( L ‘𝑏) ∪ ( R ‘𝑏))} = {〈𝑎, 𝑏〉 ∣ 𝑎 ∈ (( L ‘𝑏) ∪ ( R ‘𝑏))} | |
| 2 | no2inds.1 | . 2 ⊢ (𝑥 = 𝑧 → (𝜑 ↔ 𝜓)) | |
| 3 | no2inds.2 | . 2 ⊢ (𝑦 = 𝑤 → (𝜓 ↔ 𝜒)) | |
| 4 | no2inds.3 | . 2 ⊢ (𝑥 = 𝑧 → (𝜃 ↔ 𝜒)) | |
| 5 | no2inds.4 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜏)) | |
| 6 | no2inds.5 | . 2 ⊢ (𝑦 = 𝐵 → (𝜏 ↔ 𝜂)) | |
| 7 | no2inds.i | . 2 ⊢ ((𝑥 ∈ No ∧ 𝑦 ∈ No ) → ((∀𝑧 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))∀𝑤 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))𝜒 ∧ ∀𝑧 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))𝜓 ∧ ∀𝑤 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))𝜃) → 𝜑)) | |
| 8 | 1, 2, 3, 4, 5, 6, 7 | no2indlesm 27963 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → 𝜂) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ∀wral 3052 ∪ cun 3888 {copab 5148 ‘cfv 6493 No csur 27620 L cleft 27834 R cright 27835 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-se 5579 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-1st 7936 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-1o 8399 df-2o 8400 df-no 27623 df-lts 27624 df-bday 27625 df-slts 27767 df-cuts 27769 df-made 27836 df-old 27837 df-left 27839 df-right 27840 |
| This theorem is referenced by: addscom 27975 addbday 28027 mulscom 28148 |
| Copyright terms: Public domain | W3C validator |