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Prove thatt he set of cube roots of unity forms an abelian group with respect to multiplication. सिद्ध कीजिए कि एकता के घनमूलों का समुच्चय गुणन के सम्बन्ध में एक एवेलियन समूह बनाता है।

Ask by Vega Bryant. in India
Jan 18,2025

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The set of cube roots of unity forms an abelian group under multiplication because it satisfies all group properties and the operation is commutative.

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घनमूलों का समुच्चय \( \{ 1, \omega, \omega^2 \} \) है जहाँ \( \omega = e^{2\pi i / 3} \) और \( \omega^2 = e^{4\pi i / 3} \)। गुणन के संदर्भ में, एकता का कोई भी घनमूल हमेशा खुद के समान होता है: \( 1 \cdot 1 = 1, \, \omega \cdot \omega = \omega^2, \, \omega^2 \cdot \omega^2 = \omega \)। साथ ही, इनकी गुणन विधि असोम्बोजा रखती है क्योंकि \( \omega \cdot \omega^2 = 1 \) करता है। इस समूह में आदेश भी संतोषजनक है क्योंकि हम गुणन का संचालन करने पर हर तत्व को पुनः प्राप्त करते हैं। इसके अलावा, गुणन अभ associative है, अर्थात \( (a \cdot b) \cdot c = a \cdot (b \cdot c) \) सभी \( a, b, c \in \{ 1, \omega, \omega^2 \} \) के लिए। अतः, यह समूह एक एवेलियन समूह है।

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