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Theorem lmhmsca 20207
Description: A homomorphism of left modules constrains both modules to the same ring of scalars. (Contributed by Stefan O'Rear, 1-Jan-2015.)
Hypotheses
Ref Expression
lmhmlem.k 𝐾 = (Scalar‘𝑆)
lmhmlem.l 𝐿 = (Scalar‘𝑇)
Assertion
Ref Expression
lmhmsca (𝐹 ∈ (𝑆 LMHom 𝑇) → 𝐿 = 𝐾)

Proof of Theorem lmhmsca
StepHypRef Expression
1 lmhmlem.k . . 3 𝐾 = (Scalar‘𝑆)
2 lmhmlem.l . . 3 𝐿 = (Scalar‘𝑇)
31, 2lmhmlem 20206 . 2 (𝐹 ∈ (𝑆 LMHom 𝑇) → ((𝑆 ∈ LMod ∧ 𝑇 ∈ LMod) ∧ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ 𝐿 = 𝐾)))
43simprrd 770 1 (𝐹 ∈ (𝑆 LMHom 𝑇) → 𝐿 = 𝐾)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1539  wcel 2108  cfv 6418  (class class class)co 7255  Scalarcsca 16891   GrpHom cghm 18746  LModclmod 20038   LMHom clmhm 20196
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pr 5347
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-sbc 3712  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-br 5071  df-opab 5133  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-iota 6376  df-fun 6420  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-lmhm 20199
This theorem is referenced by:  islmhm2  20215  lmhmco  20220  lmhmplusg  20221  lmhmvsca  20222  lmhmf1o  20223  lmhmima  20224  lmhmpreima  20225  reslmhm  20229  reslmhm2  20230  reslmhm2b  20231  lindfmm  20944  lmhmclm  24156  nmoleub2lem3  24184  nmoleub3  24188  lmhmlvec2  31604  lmhmlvec  40186
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