![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > efmnd1hash | Structured version Visualization version GIF version |
Description: The monoid of endofunctions on a singleton has cardinality 1. (Contributed by AV, 27-Jan-2024.) |
Ref | Expression |
---|---|
efmnd1bas.1 | β’ πΊ = (EndoFMndβπ΄) |
efmnd1bas.2 | β’ π΅ = (BaseβπΊ) |
efmnd1bas.0 | β’ π΄ = {πΌ} |
Ref | Expression |
---|---|
efmnd1hash | β’ (πΌ β π β (β―βπ΅) = 1) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | efmnd1bas.0 | . . . 4 β’ π΄ = {πΌ} | |
2 | snfi 8989 | . . . 4 β’ {πΌ} β Fin | |
3 | 1, 2 | eqeltri 2834 | . . 3 β’ π΄ β Fin |
4 | efmnd1bas.1 | . . . 4 β’ πΊ = (EndoFMndβπ΄) | |
5 | efmnd1bas.2 | . . . 4 β’ π΅ = (BaseβπΊ) | |
6 | 4, 5 | efmndhash 18687 | . . 3 β’ (π΄ β Fin β (β―βπ΅) = ((β―βπ΄)β(β―βπ΄))) |
7 | 3, 6 | ax-mp 5 | . 2 β’ (β―βπ΅) = ((β―βπ΄)β(β―βπ΄)) |
8 | 1 | fveq2i 6846 | . . . . 5 β’ (β―βπ΄) = (β―β{πΌ}) |
9 | hashsng 14270 | . . . . 5 β’ (πΌ β π β (β―β{πΌ}) = 1) | |
10 | 8, 9 | eqtrid 2789 | . . . 4 β’ (πΌ β π β (β―βπ΄) = 1) |
11 | 10, 10 | oveq12d 7376 | . . 3 β’ (πΌ β π β ((β―βπ΄)β(β―βπ΄)) = (1β1)) |
12 | 1z 12534 | . . . 4 β’ 1 β β€ | |
13 | 1exp 13998 | . . . 4 β’ (1 β β€ β (1β1) = 1) | |
14 | 12, 13 | ax-mp 5 | . . 3 β’ (1β1) = 1 |
15 | 11, 14 | eqtrdi 2793 | . 2 β’ (πΌ β π β ((β―βπ΄)β(β―βπ΄)) = 1) |
16 | 7, 15 | eqtrid 2789 | 1 β’ (πΌ β π β (β―βπ΅) = 1) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 = wceq 1542 β wcel 2107 {csn 4587 βcfv 6497 (class class class)co 7358 Fincfn 8884 1c1 11053 β€cz 12500 βcexp 13968 β―chash 14231 Basecbs 17084 EndoFMndcefmnd 18679 |
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-rmo 3354 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-int 4909 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-oadd 8417 df-er 8649 df-map 8768 df-pm 8769 df-en 8885 df-dom 8886 df-sdom 8887 df-fin 8888 df-dju 9838 df-card 9876 df-pnf 11192 df-mnf 11193 df-xr 11194 df-ltxr 11195 df-le 11196 df-sub 11388 df-neg 11389 df-div 11814 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-uz 12765 df-fz 13426 df-seq 13908 df-exp 13969 df-hash 14232 df-struct 17020 df-slot 17055 df-ndx 17067 df-base 17085 df-plusg 17147 df-tset 17153 df-efmnd 18680 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |