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Mirrors > Home > ILE Home > Th. List > nnm0 | GIF version |
Description: Multiplication with zero. Theorem 4J(A1) of [Enderton] p. 80. (Contributed by NM, 20-Sep-1995.) |
Ref | Expression |
---|---|
nnm0 | ⊢ (𝐴 ∈ ω → (𝐴 ·𝑜 ∅) = ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnon 4352 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
2 | om0 6096 | . 2 ⊢ (𝐴 ∈ On → (𝐴 ·𝑜 ∅) = ∅) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝐴 ∈ ω → (𝐴 ·𝑜 ∅) = ∅) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1285 ∈ wcel 1434 ∅c0 3252 Oncon0 4120 ωcom 4333 (class class class)co 5537 ·𝑜 comu 6057 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 ax-coll 3895 ax-sep 3898 ax-nul 3906 ax-pow 3950 ax-pr 3966 ax-un 4190 ax-setind 4282 ax-iinf 4331 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-fal 1291 df-nf 1391 df-sb 1687 df-eu 1945 df-mo 1946 df-clab 2069 df-cleq 2075 df-clel 2078 df-nfc 2209 df-ne 2247 df-ral 2354 df-rex 2355 df-reu 2356 df-rab 2358 df-v 2604 df-sbc 2817 df-csb 2910 df-dif 2976 df-un 2978 df-in 2980 df-ss 2987 df-nul 3253 df-pw 3386 df-sn 3406 df-pr 3407 df-op 3409 df-uni 3604 df-int 3639 df-iun 3682 df-br 3788 df-opab 3842 df-mpt 3843 df-tr 3878 df-id 4050 df-iord 4123 df-on 4125 df-suc 4128 df-iom 4334 df-xp 4371 df-rel 4372 df-cnv 4373 df-co 4374 df-dm 4375 df-rn 4376 df-res 4377 df-ima 4378 df-iota 4891 df-fun 4928 df-fn 4929 df-f 4930 df-f1 4931 df-fo 4932 df-f1o 4933 df-fv 4934 df-ov 5540 df-oprab 5541 df-mpt2 5542 df-1st 5792 df-2nd 5793 df-recs 5948 df-irdg 6013 df-oadd 6063 df-omul 6064 |
This theorem is referenced by: nnmcl 6118 nndi 6123 nnmass 6124 nnmsucr 6125 nnmcom 6126 nnm1 6156 nnm00 6161 enq0tr 6675 nq0m0r 6697 nq0a0 6698 |
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