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Mirrors > Home > MPE Home > Th. List > f0 | Structured version Visualization version Unicode version |
Description: The empty function. (Contributed by NM, 14-Aug-1999.) |
Ref | Expression |
---|---|
f0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2622 | . . 3 | |
2 | fn0 6011 | . . 3 | |
3 | 1, 2 | mpbir 221 | . 2 |
4 | rn0 5377 | . . 3 | |
5 | 0ss 3972 | . . 3 | |
6 | 4, 5 | eqsstri 3635 | . 2 |
7 | df-f 5892 | . 2 | |
8 | 3, 6, 7 | mpbir2an 955 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wceq 1483 wss 3574 c0 3915 crn 5115 wfn 5883 wf 5884 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-br 4654 df-opab 4713 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-fun 5890 df-fn 5891 df-f 5892 |
This theorem is referenced by: f00 6087 f0bi 6088 f10 6169 map0g 7897 ac6sfi 8204 oif 8435 wrd0 13330 0csh0 13539 ram0 15726 0ssc 16497 0subcat 16498 gsum0 17278 ga0 17731 0frgp 18192 ptcmpfi 21616 0met 22171 perfdvf 23667 uhgr0e 25966 uhgr0 25968 griedg0prc 26156 locfinref 29908 matunitlindf 33407 poimirlem28 33437 mapdm0OLD 39383 climlimsupcex 40001 0cnf 40090 dvnprodlem3 40163 mbf0 40173 sge00 40593 hoidmvlelem3 40811 |
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