User Mark - Mathematics Meta Stack Exchange

Mark

Member for 10 years, 7 months
Last seen more than 2 years ago

Milan, Italy

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I am a lover of mathematics and study it at leisure. I also willing to encourage the youths who consider maths as a problem.

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Apr 15, 2015

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35

Geometric meaning of the determinant of a matrix

21

Eigenvalues of the sum of two matrices: one diagonal and the other not.

11

Sampling theorem.

11

Physical meaning of linear ODE $xy''+2y' + \lambda^2 x y = 0$

11

Reducing the number of nodes of a tree, to obtain nodes with more than one child node