Theorem grpridd 18880

Description: The identity element of a group is a right identity. Deduction associated with grprid 18878. (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 18878	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑋 + 0 ) = 𝑋)
7	1, 2, 6	syl2anc 584	1 ⊢ (𝜑 → (𝑋 + 0 ) = 𝑋)

Syntax hints:   → wi 4   = wceq 1541   ∈ wcel 2111  ‘cfv 6481  (class class class)co 7346  Basecbs 17117  +_gcplusg 17158  0_gc0g 17340  Grpcgrp 18843

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 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-sep 5234  ax-nul 5244  ax-pr 5370

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3742  df-dif 3905  df-un 3907  df-ss 3919  df-nul 4284  df-if 4476  df-sn 4577  df-pr 4579  df-op 4583  df-uni 4860  df-br 5092  df-opab 5154  df-mpt 5173  df-id 5511  df-xp 5622  df-rel 5623  df-cnv 5624  df-co 5625  df-dm 5626  df-iota 6437  df-fun 6483  df-fv 6489  df-riota 7303  df-ov 7349  df-0g 17342  df-mgm 18545  df-sgrp 18624  df-mnd 18640  df-grp 18846

This theorem is referenced by:  grprcan  18883  ghmqusnsglem1  19190  ablsubaddsub  19724  rnglidlmcl  21151  rloccring  33232  ressply1evls1  33523  evl1deg1  33534  evl1deg2  33535  evl1deg3  33536  irredminply  33724  rtelextdg2lem  33734  primrootscoprmpow  42131  primrootscoprbij  42134