[數撚圍爐區] 理想與現實 (11)
吾不懂數學
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Field同 ring 個分別係咩？
可唔可以講field = commutative ring?
可唔可以講field = commutative ring?
field 仲要all non-zero elements are units
If T : V -> W, where T is linear, then T* : W* -> V*
其實呢個係咪定義嚟？好似揾唔到點證
其實呢個係咪定義嚟？好似揾唔到點證
