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Nathaniel Johnston's user avatar
Nathaniel Johnston's user avatar
Nathaniel Johnston's user avatar
Nathaniel Johnston
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I am an Associate Professor at Mount Allison University in Sackville, New Brunswick, Canada. I am interested in quantum entanglement, combinatorics, matrix analysis, and (just to mix it up) Conway's Game of Life.

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51
A strengthening of the Cauchy-Schwarz inequality
Jun 2, 2018
35
Orthogonal vectors with entries from $\{-1,0,1\}$
May 17, 2023
32
Necessary conditions for the existence of solution of Sylvester equation AX=XB
Feb 29, 2020
31
Square root of doubly positive symmetric matrices
Oct 18, 2020
30
What is the intuition for the trace norm (nuclear norm)?
Aug 6, 2017
28
Are infinite planar graphs still 4-colorable?
Dec 15, 2013
22
Which theorems have Pythagoras' Theorem as a special case?
May 5, 2022
17
Possible values of the determinant for matrices with elements $\{1, 0, -1\}$
Apr 17, 2022
17
positive not completely positive maps
Jul 15, 2015
16
Find the determinant of a matrix given the determinant of all $p\times p$ sub-matrices?
Feb 21, 2022
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23
Does $\lfloor(4+\sqrt{11})^{n}\rfloor \pmod {100}$ repeat every $20$ cycles of $n$?