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| Mirrors > Home > MPE Home > Th. List > lspsneq0b | Structured version Visualization version GIF version | ||
| Description: Equal singleton spans imply both arguments are zero or both are nonzero. (Contributed by NM, 21-Mar-2015.) |
| Ref | Expression |
|---|---|
| lspsneq0b.v | ⊢ 𝑉 = (Base‘𝑊) |
| lspsneq0b.o | ⊢ 0 = (0g‘𝑊) |
| lspsneq0b.n | ⊢ 𝑁 = (LSpan‘𝑊) |
| lspsneq0b.w | ⊢ (𝜑 → 𝑊 ∈ LMod) |
| lspsneq0b.x | ⊢ (𝜑 → 𝑋 ∈ 𝑉) |
| lspsneq0b.y | ⊢ (𝜑 → 𝑌 ∈ 𝑉) |
| lspsneq0b.e | ⊢ (𝜑 → (𝑁‘{𝑋}) = (𝑁‘{𝑌})) |
| Ref | Expression |
|---|---|
| lspsneq0b | ⊢ (𝜑 → (𝑋 = 0 ↔ 𝑌 = 0 )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lspsneq0b.e | . . . . 5 ⊢ (𝜑 → (𝑁‘{𝑋}) = (𝑁‘{𝑌})) | |
| 2 | 1 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 0 ) → (𝑁‘{𝑋}) = (𝑁‘{𝑌})) |
| 3 | lspsneq0b.w | . . . . . 6 ⊢ (𝜑 → 𝑊 ∈ LMod) | |
| 4 | lspsneq0b.x | . . . . . 6 ⊢ (𝜑 → 𝑋 ∈ 𝑉) | |
| 5 | lspsneq0b.v | . . . . . . 7 ⊢ 𝑉 = (Base‘𝑊) | |
| 6 | lspsneq0b.o | . . . . . . 7 ⊢ 0 = (0g‘𝑊) | |
| 7 | lspsneq0b.n | . . . . . . 7 ⊢ 𝑁 = (LSpan‘𝑊) | |
| 8 | 5, 6, 7 | lspsneq0 21001 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝑋 ∈ 𝑉) → ((𝑁‘{𝑋}) = { 0 } ↔ 𝑋 = 0 )) |
| 9 | 3, 4, 8 | syl2anc 585 | . . . . 5 ⊢ (𝜑 → ((𝑁‘{𝑋}) = { 0 } ↔ 𝑋 = 0 )) |
| 10 | 9 | biimpar 477 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 0 ) → (𝑁‘{𝑋}) = { 0 }) |
| 11 | 2, 10 | eqtr3d 2774 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 0 ) → (𝑁‘{𝑌}) = { 0 }) |
| 12 | lspsneq0b.y | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝑉) | |
| 13 | 5, 6, 7 | lspsneq0 21001 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝑌 ∈ 𝑉) → ((𝑁‘{𝑌}) = { 0 } ↔ 𝑌 = 0 )) |
| 14 | 3, 12, 13 | syl2anc 585 | . . . 4 ⊢ (𝜑 → ((𝑁‘{𝑌}) = { 0 } ↔ 𝑌 = 0 )) |
| 15 | 14 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 0 ) → ((𝑁‘{𝑌}) = { 0 } ↔ 𝑌 = 0 )) |
| 16 | 11, 15 | mpbid 232 | . 2 ⊢ ((𝜑 ∧ 𝑋 = 0 ) → 𝑌 = 0 ) |
| 17 | 1 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑌 = 0 ) → (𝑁‘{𝑋}) = (𝑁‘{𝑌})) |
| 18 | 14 | biimpar 477 | . . . 4 ⊢ ((𝜑 ∧ 𝑌 = 0 ) → (𝑁‘{𝑌}) = { 0 }) |
| 19 | 17, 18 | eqtrd 2772 | . . 3 ⊢ ((𝜑 ∧ 𝑌 = 0 ) → (𝑁‘{𝑋}) = { 0 }) |
| 20 | 9 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑌 = 0 ) → ((𝑁‘{𝑋}) = { 0 } ↔ 𝑋 = 0 )) |
| 21 | 19, 20 | mpbid 232 | . 2 ⊢ ((𝜑 ∧ 𝑌 = 0 ) → 𝑋 = 0 ) |
| 22 | 16, 21 | impbida 801 | 1 ⊢ (𝜑 → (𝑋 = 0 ↔ 𝑌 = 0 )) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 {csn 4568 ‘cfv 6493 Basecbs 17173 0gc0g 17396 LModclmod 20849 LSpanclspn 20960 |
| 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 5213 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 |
| 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-nel 3038 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-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-nn 12169 df-2 12238 df-sets 17128 df-slot 17146 df-ndx 17158 df-base 17174 df-plusg 17227 df-0g 17398 df-mgm 18602 df-sgrp 18681 df-mnd 18697 df-grp 18906 df-minusg 18907 df-cmn 19751 df-abl 19752 df-mgp 20116 df-rng 20128 df-ur 20157 df-ring 20210 df-lmod 20851 df-lss 20921 df-lsp 20961 |
| This theorem is referenced by: lspsneq 21115 |
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