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Cgbg Aj. I j h n _ k k b h g Z e v g u c i Z d _ l,. V Y J z b g N C N W O ͊y V Amazon ň l Ȃ́H l b g ʔ̑ ̊y V amazon A i h b g R s ̖̂ ǂȂǂł ň l Ȏ戵 X \ ̂Œ Ă݂܂ B.

Section 4 Solutions 31 An element x of a group G is called idempotent if x x = x Prove that any group G has exactly one idempotent element Proof. L s A L w O ɂ 錋 ʏd ̐ ́E e T ł B S Ă̏ ̕ ɁA N Ŕ Ă 炢 Ƃ z Ŏ{ p s Ȃ Ă ܂ B N Ŕ ΁A ̎ M ͐l z T ɕς ܂ B N ̂ ߂Ɏ 𖁂 B t F B ͎d q āA ̑ œ P 鏗 Ă ܂ B. Conversion Table A= 1 B=2 C=3 D= 4 E=5 F=6 G= 7 H= 8 I=9 J=10 K=11 L=12 M=13 N=14 O=15 P=16 Q=17 R=18 S=19 T= U=21 V=22 W=23 X=24 Y=25 Z=26 Classroom Activity 2.

A y A W B j s B w 劽 } B C y ɂ ₢ 킹 B.

Eimode F j X g t L N ^ / A j / Q A j v t EEZweb F J e S ( j X g) t E r f I N b v A j E Q A j v t. ŐV 12 N7 31 o Y G N X g w ^ A T Axis Powers m Łn ۉ G a. Section 4 Solutions 31 An element x of a group G is called idempotent if x x = x Prove that any group G has exactly one idempotent element Proof. S S ̂ 悢 ΂ɂ ܂ i E a R ̘Ȃ܂ ͂ ̂܂܁A E ̗ ꂽ l X Ɉ A C ^ i V i Ȃ ĂȂ ŊF l } ܂.