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Theorem mndvrid 21005
Description: Tuple-wise right identity in monoids. (Contributed by Stefan O'Rear, 5-Sep-2015.)
Hypotheses
Ref Expression
mndvcl.b 𝐵 = (Base‘𝑀)
mndvcl.p + = (+g𝑀)
mndvlid.z 0 = (0g𝑀)
Assertion
Ref Expression
mndvrid ((𝑀 ∈ Mnd ∧ 𝑋 ∈ (𝐵m 𝐼)) → (𝑋f + (𝐼 × { 0 })) = 𝑋)

Proof of Theorem mndvrid
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 elmapex 8427 . . . 4 (𝑋 ∈ (𝐵m 𝐼) → (𝐵 ∈ V ∧ 𝐼 ∈ V))
21simprd 498 . . 3 (𝑋 ∈ (𝐵m 𝐼) → 𝐼 ∈ V)
32adantl 484 . 2 ((𝑀 ∈ Mnd ∧ 𝑋 ∈ (𝐵m 𝐼)) → 𝐼 ∈ V)
4 elmapi 8428 . . 3 (𝑋 ∈ (𝐵m 𝐼) → 𝑋:𝐼𝐵)
54adantl 484 . 2 ((𝑀 ∈ Mnd ∧ 𝑋 ∈ (𝐵m 𝐼)) → 𝑋:𝐼𝐵)
6 mndvcl.b . . . 4 𝐵 = (Base‘𝑀)
7 mndvlid.z . . . 4 0 = (0g𝑀)
86, 7mndidcl 17926 . . 3 (𝑀 ∈ Mnd → 0𝐵)
98adantr 483 . 2 ((𝑀 ∈ Mnd ∧ 𝑋 ∈ (𝐵m 𝐼)) → 0𝐵)
10 mndvcl.p . . . 4 + = (+g𝑀)
116, 10, 7mndrid 17932 . . 3 ((𝑀 ∈ Mnd ∧ 𝑥𝐵) → (𝑥 + 0 ) = 𝑥)
1211adantlr 713 . 2 (((𝑀 ∈ Mnd ∧ 𝑋 ∈ (𝐵m 𝐼)) ∧ 𝑥𝐵) → (𝑥 + 0 ) = 𝑥)
133, 5, 9, 12caofid0r 7438 1 ((𝑀 ∈ Mnd ∧ 𝑋 ∈ (𝐵m 𝐼)) → (𝑋f + (𝐼 × { 0 })) = 𝑋)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 398   = wceq 1537  wcel 2114  Vcvv 3494  {csn 4567   × cxp 5553  wf 6351  cfv 6355  (class class class)co 7156  f cof 7407  m cmap 8406  Basecbs 16483  +gcplusg 16565  0gc0g 16713  Mndcmnd 17911
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-rep 5190  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-iun 4921  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-riota 7114  df-ov 7159  df-oprab 7160  df-mpo 7161  df-of 7409  df-1st 7689  df-2nd 7690  df-map 8408  df-0g 16715  df-mgm 17852  df-sgrp 17901  df-mnd 17912
This theorem is referenced by: (None)
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