MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  lspsnsubn0 Structured version   Visualization version   GIF version

Theorem lspsnsubn0 21424
Description: Unequal singleton spans imply nonzero vector subtraction. (Contributed by NM, 19-Mar-2015.)
Hypotheses
Ref Expression
lspsnsubn0.v 𝑉 = (Base‘𝑊)
lspsnsubn0.o 0 = (0g‘𝑊)
lspsnsubn0.m − = (-g‘𝑊)
lspsnsubn0.w (𝜑 → 𝑊 ∈ LMod)
lspsnsubn0.x (𝜑 → 𝑋 ∈ 𝑉)
lspsnsubn0.y (𝜑 → 𝑌 ∈ 𝑉)
lspsnsubn0.e (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌}))
Assertion
Ref Expression
lspsnsubn0 (𝜑 → (𝑋 − 𝑌) ≠ 0 )

Proof of Theorem lspsnsubn0
StepHypRef Expression
1 lspsnsubn0.e . 2 (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌}))
2 lspsnsubn0.w . . . . 5 (𝜑 → 𝑊 ∈ LMod)
3 lspsnsubn0.x . . . . 5 (𝜑 → 𝑋 ∈ 𝑉)
4 lspsnsubn0.y . . . . 5 (𝜑 → 𝑌 ∈ 𝑉)
5 lspsnsubn0.v . . . . . 6 𝑉 = (Base‘𝑊)
6 lspsnsubn0.o . . . . . 6 0 = (0g‘𝑊)
7 lspsnsubn0.m . . . . . 6 − = (-g‘𝑊)
85, 6, 7lmodsubeq0 21202 . . . . 5 ((𝑊 ∈ LMod ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝑋 − 𝑌) = 0 ↔ 𝑋 = 𝑌))
92, 3, 4, 8syl3anc 1398 . . . 4 (𝜑 → ((𝑋 − 𝑌) = 0 ↔ 𝑋 = 𝑌))
10 sneq 4590 . . . . 5 (𝑋 = 𝑌 → {𝑋} = {𝑌})
1110fveq2d 6890 . . . 4 (𝑋 = 𝑌 → (𝑁‘{𝑋}) = (𝑁‘{𝑌}))
129, 11biimtrdi 256 . . 3 (𝜑 → ((𝑋 − 𝑌) = 0 → (𝑁‘{𝑋}) = (𝑁‘{𝑌})))
1312necon3d 2976 . 2 (𝜑 → ((𝑁‘{𝑋}) ≠ (𝑁‘{𝑌}) → (𝑋 − 𝑌) ≠ 0 ))
141, 13mpd 16 1 (𝜑 → (𝑋 − 𝑌) ≠ 0 )
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   = wceq 1569   ∈ wcel 2144   ≠ wne 2955  {csn 4584  ‘cfv 6539  (class class class)co 7421  Basecbs 17393  0gc0g 17616  -gcsg 19152  LModclmod 21141
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7752
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rmo 3365  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5545  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-iota 6494  df-fun 6541  df-fn 6542  df-f 6543  df-fv 6547  df-riota 7378  df-ov 7424  df-oprab 7425  df-mpo 7426  df-1st 8002  df-2nd 8003  df-0g 17618  df-mgm 18822  df-sgrp 18914  df-mnd 18930  df-grp 19153  df-minusg 19154  df-sbg 19155  df-lmod 21143
This theorem is used by:  mapdpglem4N  42827
  Copyright terms: Public domain W3C validator