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cronokirby.com | ||
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argumatronic.com
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| | | | Occasional writings about Haskell. | |
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www.jeremykun.com
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| | | | The First Isomorphism Theorem The meat of our last primer was a proof that quotient groups are well-defined. One important result that helps us compute groups is a very easy consequence of this well-definition. Recall that if $ G,H$ are groups and $ \varphi: G \to H$ is a group homomorphism, then the image of $ \varphi$ is a subgroup of $ H$. Also the kernel of $ \varphi$ is the normal subgroup of $ G$ consisting of the elements which are mapped to the identity under $ \varphi$. | |
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www.haskellforall.com
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| | | | Prelude Some time ago I asked a question on /r/haskell about what unique purpose GADTs served that other language features could not prov... | |
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cuoichutdi.wordpress.com
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| | Liverpool v?a vô ??ch Premier League, ?i?u này t?o nên m?t th?ng kê thú v?: s? cúp vô ??ch c?a các ??i bóng t?o thành m?t dãy s? Fibonacci. ?i?u này là ng?u nhiên hay có m?t cách lí gi?i toán h?c ?n sau nó? Tôi biên bài báo ng?n v? dãy Fibonacci c?ng nh?... |