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Mirrors > Home > MPE Home > Th. List > pwssnf1o | Structured version Visualization version GIF version |
Description: Triviality of singleton powers: set equipollence. (Contributed by Stefan O'Rear, 24-Jan-2015.) |
Ref | Expression |
---|---|
pwssnf1o.y | ⊢ 𝑌 = (𝑅 ↑s {𝐼}) |
pwssnf1o.b | ⊢ 𝐵 = (Base‘𝑅) |
pwssnf1o.f | ⊢ 𝐹 = (𝑥 ∈ 𝐵 ↦ ({𝐼} × {𝑥})) |
pwssnf1o.c | ⊢ 𝐶 = (Base‘𝑌) |
Ref | Expression |
---|---|
pwssnf1o | ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝐹:𝐵–1-1-onto→𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pwssnf1o.b | . . . 4 ⊢ 𝐵 = (Base‘𝑅) | |
2 | 1 | fvexi 6857 | . . 3 ⊢ 𝐵 ∈ V |
3 | simpr 486 | . . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝐼 ∈ 𝑊) | |
4 | pwssnf1o.f | . . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝐵 ↦ ({𝐼} × {𝑥})) | |
5 | 4 | mapsnf1o 8878 | . . 3 ⊢ ((𝐵 ∈ V ∧ 𝐼 ∈ 𝑊) → 𝐹:𝐵–1-1-onto→(𝐵 ↑m {𝐼})) |
6 | 2, 3, 5 | sylancr 588 | . 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝐹:𝐵–1-1-onto→(𝐵 ↑m {𝐼})) |
7 | pwssnf1o.c | . . . 4 ⊢ 𝐶 = (Base‘𝑌) | |
8 | snex 5389 | . . . . . 6 ⊢ {𝐼} ∈ V | |
9 | pwssnf1o.y | . . . . . . 7 ⊢ 𝑌 = (𝑅 ↑s {𝐼}) | |
10 | 9, 1 | pwsbas 17370 | . . . . . 6 ⊢ ((𝑅 ∈ 𝑉 ∧ {𝐼} ∈ V) → (𝐵 ↑m {𝐼}) = (Base‘𝑌)) |
11 | 8, 10 | mpan2 690 | . . . . 5 ⊢ (𝑅 ∈ 𝑉 → (𝐵 ↑m {𝐼}) = (Base‘𝑌)) |
12 | 11 | adantr 482 | . . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → (𝐵 ↑m {𝐼}) = (Base‘𝑌)) |
13 | 7, 12 | eqtr4id 2796 | . . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝐶 = (𝐵 ↑m {𝐼})) |
14 | 13 | f1oeq3d 6782 | . 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → (𝐹:𝐵–1-1-onto→𝐶 ↔ 𝐹:𝐵–1-1-onto→(𝐵 ↑m {𝐼}))) |
15 | 6, 14 | mpbird 257 | 1 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊) → 𝐹:𝐵–1-1-onto→𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 Vcvv 3446 {csn 4587 ↦ cmpt 5189 × cxp 5632 –1-1-onto→wf1o 6496 ‘cfv 6497 (class class class)co 7358 ↑m cmap 8766 Basecbs 17084 ↑s cpws 17329 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2708 ax-sep 5257 ax-nul 5264 ax-pow 5321 ax-pr 5385 ax-un 7673 ax-cnex 11108 ax-resscn 11109 ax-1cn 11110 ax-icn 11111 ax-addcl 11112 ax-addrcl 11113 ax-mulcl 11114 ax-mulrcl 11115 ax-mulcom 11116 ax-addass 11117 ax-mulass 11118 ax-distr 11119 ax-i2m1 11120 ax-1ne0 11121 ax-1rid 11122 ax-rnegex 11123 ax-rrecex 11124 ax-cnre 11125 ax-pre-lttri 11126 ax-pre-lttrn 11127 ax-pre-ltadd 11128 ax-pre-mulgt0 11129 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3066 df-rex 3075 df-reu 3355 df-rab 3409 df-v 3448 df-sbc 3741 df-csb 3857 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3930 df-nul 4284 df-if 4488 df-pw 4563 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-uni 4867 df-iun 4957 df-br 5107 df-opab 5169 df-mpt 5190 df-tr 5224 df-id 5532 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5589 df-we 5591 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-pred 6254 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6499 df-fn 6500 df-f 6501 df-f1 6502 df-fo 6503 df-f1o 6504 df-fv 6505 df-riota 7314 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7804 df-1st 7922 df-2nd 7923 df-frecs 8213 df-wrecs 8244 df-recs 8318 df-rdg 8357 df-1o 8413 df-er 8649 df-map 8768 df-ixp 8837 df-en 8885 df-dom 8886 df-sdom 8887 df-fin 8888 df-sup 9379 df-pnf 11192 df-mnf 11193 df-xr 11194 df-ltxr 11195 df-le 11196 df-sub 11388 df-neg 11389 df-nn 12155 df-2 12217 df-3 12218 df-4 12219 df-5 12220 df-6 12221 df-7 12222 df-8 12223 df-9 12224 df-n0 12415 df-z 12501 df-dec 12620 df-uz 12765 df-fz 13426 df-struct 17020 df-slot 17055 df-ndx 17067 df-base 17085 df-plusg 17147 df-mulr 17148 df-sca 17150 df-vsca 17151 df-ip 17152 df-tset 17153 df-ple 17154 df-ds 17156 df-hom 17158 df-cco 17159 df-prds 17330 df-pws 17332 |
This theorem is referenced by: pwslnmlem1 41422 |
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