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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 4710 | . 2 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
| 2 | om0 6631 | . 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 1397 ∈ wcel 2201 ∅c0 3493 Oncon0 4462 ωcom 4690 (class class class)co 6023 ·o comu 6585 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2203 ax-14 2204 ax-ext 2212 ax-coll 4205 ax-sep 4208 ax-nul 4216 ax-pow 4266 ax-pr 4301 ax-un 4532 ax-setind 4637 ax-iinf 4688 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-ral 2514 df-rex 2515 df-reu 2516 df-rab 2518 df-v 2803 df-sbc 3031 df-csb 3127 df-dif 3201 df-un 3203 df-in 3205 df-ss 3212 df-nul 3494 df-pw 3655 df-sn 3676 df-pr 3677 df-op 3679 df-uni 3895 df-int 3930 df-iun 3973 df-br 4090 df-opab 4152 df-mpt 4153 df-tr 4189 df-id 4392 df-iord 4465 df-on 4467 df-suc 4470 df-iom 4691 df-xp 4733 df-rel 4734 df-cnv 4735 df-co 4736 df-dm 4737 df-rn 4738 df-res 4739 df-ima 4740 df-iota 5288 df-fun 5330 df-fn 5331 df-f 5332 df-f1 5333 df-fo 5334 df-f1o 5335 df-fv 5336 df-ov 6026 df-oprab 6027 df-mpo 6028 df-1st 6308 df-2nd 6309 df-recs 6476 df-irdg 6541 df-oadd 6591 df-omul 6592 |
| This theorem is referenced by: nnmcl 6654 nndi 6659 nnmass 6660 nnmsucr 6661 nnmcom 6662 nnm1 6698 nnm00 6703 enq0tr 7659 nq0m0r 7681 nq0a0 7682 |
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