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| Mirrors > Home > MPE Home > Th. List > mulsne0bd | Structured version Visualization version GIF version | ||
| Description: The product of two nonzero surreals is nonzero. (Contributed by Scott Fenton, 16-Apr-2025.) |
| Ref | Expression |
|---|---|
| muls0ord.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| muls0ord.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| Ref | Expression |
|---|---|
| mulsne0bd | ⊢ (𝜑 → ((𝐴 ·s 𝐵) ≠ 0s ↔ (𝐴 ≠ 0s ∧ 𝐵 ≠ 0s ))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | muls0ord.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 2 | muls0ord.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 3 | 1, 2 | muls0ord 28165 | . . 3 ⊢ (𝜑 → ((𝐴 ·s 𝐵) = 0s ↔ (𝐴 = 0s ∨ 𝐵 = 0s ))) |
| 4 | 3 | necon3abid 2969 | . 2 ⊢ (𝜑 → ((𝐴 ·s 𝐵) ≠ 0s ↔ ¬ (𝐴 = 0s ∨ 𝐵 = 0s ))) |
| 5 | neanior 3026 | . 2 ⊢ ((𝐴 ≠ 0s ∧ 𝐵 ≠ 0s ) ↔ ¬ (𝐴 = 0s ∨ 𝐵 = 0s )) | |
| 6 | 4, 5 | bitr4di 289 | 1 ⊢ (𝜑 → ((𝐴 ·s 𝐵) ≠ 0s ↔ (𝐴 ≠ 0s ∧ 𝐵 ≠ 0s ))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∨ wo 848 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 (class class class)co 7358 No csur 27591 0s c0s 27785 ·s cmuls 28086 |
| 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 |
| 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-ral 3053 df-rex 3063 df-rmo 3343 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-tp 4573 df-op 4575 df-ot 4577 df-uni 4852 df-int 4891 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-se 5576 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-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-1st 7933 df-2nd 7934 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-1o 8396 df-2o 8397 df-nadd 8593 df-no 27594 df-lts 27595 df-bday 27596 df-les 27697 df-slts 27738 df-cuts 27740 df-0s 27787 df-made 27807 df-old 27808 df-left 27810 df-right 27811 df-norec 27918 df-norec2 27929 df-adds 27940 df-negs 28001 df-subs 28002 df-muls 28087 |
| This theorem is referenced by: recsne0 28172 divmuldivsd 28212 divdivs1d 28213 |
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