Hsien-Chih Chang

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Name Hsien-Chih Chang
Member for 3 years
Seen May 8 at 18:16
Website
Location Taiwan
Age 26
Ex-student in Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan. Currently doing free researches and preparing for admissions.

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Polynomial bijection from QxQ to Q?

apr 29 at 16:31 unknown (yahoo) 1

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What should be learned in a first serious schemes course?

jul 28 11 at 13:49 Jason Starr 1,880●8●14

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Proofs that require fundamentally new ways of thinking

may 9 at 23:09 Dan Sălăjan 254●8

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Why is a topology made up of ‘open’ sets? [closed]

jan 21 at 20:07 Marcos Cossarini 713●6●8

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Math puzzles for dinner [closed]

feb 2 11 at 11:38 klaraspina 105●1●6

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Suggestions for good notation

feb 2 at 23:15 Douglas Lind 463●3●6

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Your favorite surprising connections in Mathematics

dec 31 at 0:26 David Corwin 6,730●23●56

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Light rays bouncing in twisted tubes

dec 10 11 at 1:51 Joseph O'Rourke 43.3k●1●49●214

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solving f(f(x))=g(x)

mar 16 at 5:02 Daniel Geisler 596●1●5●14

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Light reflecting off Christmas-tree balls

dec 9 11 at 21:42 Joseph O'Rourke 43.3k●1●49●214

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