Theorem grpridd 18937

Description: The identity element of a group is a right identity. Deduction associated with grprid 18935. (Contributed by SN, 29-Jan-2025.)

Hypotheses

Ref	Expression
grpbn0.b	⊢ 𝐵 = (Base‘𝐺)
grplid.p	⊢ + = (+g‘𝐺)
grplid.o	⊢ 0 = (0g‘𝐺)
grplidd.g	⊢ (𝜑 → 𝐺 ∈ Grp)
grplidd.1	⊢ (𝜑 → 𝑋 ∈ 𝐵)

Assertion

Ref	Expression
grpridd	⊢ (𝜑 → (𝑋 + 0 ) = 𝑋)

Proof of Theorem grpridd

Step	Hyp	Ref	Expression
1		grplidd.g	. 2 ⊢ (𝜑 → 𝐺 ∈ Grp)
2		grplidd.1	. 2 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
3		grpbn0.b	. . 3 ⊢ 𝐵 = (Base‘𝐺)
4		grplid.p	. . 3 ⊢ + = (+g‘𝐺)
5		grplid.o	. . 3 ⊢ 0 = (0g‘𝐺)
6	3, 4, 5	grprid 18935	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑋 + 0 ) = 𝑋)
7	1, 2, 6	syl2anc 585	1 ⊢ (𝜑 → (𝑋 + 0 ) = 𝑋)

Syntax hints:   → wi 4   = wceq 1542   ∈ wcel 2114  ‘cfv 6492  (class class class)co 7360  Basecbs 17170  +_gcplusg 17211  0_gc0g 17393  Grpcgrp 18900

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-sep 5231  ax-nul 5241  ax-pr 5370

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  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-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-iota 6448  df-fun 6494  df-fv 6500  df-riota 7317  df-ov 7363  df-0g 17395  df-mgm 18599  df-sgrp 18678  df-mnd 18694  df-grp 18903

This theorem is referenced by:  grprcan  18940  ghmqusnsglem1  19246  ablsubaddsub  19780  rnglidlmcl  21206  rloccring  33346  ressply1evls1  33640  evl1deg1  33651  evl1deg2  33652  evl1deg3  33653  mplgsum  33712  esplyind  33734  esplyfvn  33736  irredminply  33876  rtelextdg2lem  33886  primrootscoprmpow  42552  primrootscoprbij  42555