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| Mirrors > Home > MPE Home > Th. List > Mathboxes > relexp1idm | Structured version Visualization version GIF version | ||
| Description: Repeated raising a relation to the first power is idempotent. (Contributed by RP, 12-Jun-2020.) |
| Ref | Expression |
|---|---|
| relexp1idm | ⊢ (𝑅 ∈ 𝑉 → ((𝑅↑𝑟1)↑𝑟1) = (𝑅↑𝑟1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ifid 4508 | . . . 4 ⊢ if(1 < 1, 1, 1) = 1 | |
| 2 | 1 | eqcomi 2746 | . . 3 ⊢ 1 = if(1 < 1, 1, 1) |
| 3 | 2 | jctr 524 | . 2 ⊢ (𝑅 ∈ 𝑉 → (𝑅 ∈ 𝑉 ∧ 1 = if(1 < 1, 1, 1))) |
| 4 | 1ex 11129 | . . . 4 ⊢ 1 ∈ V | |
| 5 | 4 | prid2 4708 | . . 3 ⊢ 1 ∈ {0, 1} |
| 6 | 5, 5 | pm3.2i 470 | . 2 ⊢ (1 ∈ {0, 1} ∧ 1 ∈ {0, 1}) |
| 7 | relexp01min 44155 | . 2 ⊢ (((𝑅 ∈ 𝑉 ∧ 1 = if(1 < 1, 1, 1)) ∧ (1 ∈ {0, 1} ∧ 1 ∈ {0, 1})) → ((𝑅↑𝑟1)↑𝑟1) = (𝑅↑𝑟1)) | |
| 8 | 3, 6, 7 | sylancl 587 | 1 ⊢ (𝑅 ∈ 𝑉 → ((𝑅↑𝑟1)↑𝑟1) = (𝑅↑𝑟1)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ifcif 4467 {cpr 4570 class class class wbr 5086 (class class class)co 7358 0cc0 11027 1c1 11028 < clt 11168 ↑𝑟crelexp 14970 |
| 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 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 |
| 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-nel 3038 df-ral 3053 df-rex 3063 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-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-2nd 7934 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-rdg 8340 df-er 8634 df-en 8885 df-dom 8886 df-sdom 8887 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-nn 12164 df-n0 12427 df-z 12514 df-uz 12778 df-seq 13953 df-relexp 14971 |
| This theorem is referenced by: (None) |
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