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 Excavator
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~789 people reached

Mar
22
awarded  Excavator
Mar
22
revised Column Space and SVD
u_r was not in place
Mar
22
suggested approved edit on Column Space and SVD
Sep
24
awarded  Autobiographer
Aug
17
comment Explicit solutions for advection-diffusion PDEs
What about boundary conditions?
Aug
10
asked Explicit solutions for advection-diffusion PDEs
Jul
30
comment A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
This is a constructive solution which I could use in a computer program, as I intended to.
Jul
30
awarded  Student
Jul
30
comment A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
@dtldarek I didn't notice at first, that you have linked to a question with your proposal, I'm on it now.
Jul
30
revised A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
edited title
Jul
30
comment A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
@dtldarek : your answer will require $k$ colours to be used. I have an additional requirement : only one colour should be used. Is this enough as a structure?
Jul
30
awarded  Commentator
Jul
30
comment A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
@dtldarek : propose it and you will get the score.
Jul
30
comment A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
@IttayWeiss dtldarek is correct.
Jul
30
comment A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
@EricStucky you're right, I'm looking for a bijective mapping. There's no algebraic structure whatsoever.
Jul
30
revised A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
deleted 2 characters in body
Jul
30
asked A bijective mapping from $\mathbb N^k$ to $\mathbb N$?
Jun
9
awarded  Supporter
Oct
24
awarded  Editor
Oct
24
comment Inner products equality for one of vectors fixed
@RahulNarain the inner product. I did the edit.