Mathematics · Group Theory
मान लीजिए &integ; सभी पूर्णांकों का समुच्चय है और &integ; में '' एक द्वि-आधारी संक्रिया है, जिसे a * b = a + b + 10 द्वारा सभी a, b ∈ &integ; के लिए परिभाषित किया गया है। तब (&integ;, *) एक आबेली समूह है। इस समूह का तत्समक अवयव ______ है।
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