Posts tagged: analysis
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Nonsymmetric SIEP paper is published in LAA
April 05, 2017
My first solo paper "Existence of a Not Necessarily Symmetric Matrix with Given Distinct Eigenvalues and Graph" got published in Journal of Linear Algebra and its Applications, yesterday. It took it...
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Determinant and Jacobian
October 07, 2016
Today I started my linear algebra class by motivating the determinant using a little bit of history and applications. In particular I talked about determinant appearing in the change of variables in...
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Linear approximation and Taylor polynomials
June 16, 2016
For a given function $f(x)$ around a point $a$, if you zoom in close enough on the graph of the function, you can't tell the difference between the curve and the tangent line to the graph of the...
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Some March Mathness
March 03, 2016
I went to several talks and meetings in the past few days, and I am going to talk about some of them, but first let me start with some predicting game:
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Infinite inverse spectrum problems
February 06, 2016
Ehssan Khanmohammadi and I just submitted a paper on inverse eigenvalue problems for infinite graphs. Essentially we proved that for a given bounded set $\Lambda$ and an infinite graph $G$ on...
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Roots of a polynomial
January 28, 2016
Today I read a lot of random mathematics and many of them led to places outside math, and among them is this one: Parkinson's Law. One of them that at this last hour of work day is still related to...
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Sagemath for calculus
December 01, 2015
I have used several geogebra applets in my calculus class, but there's always things that you wanna do that there's no applet out there for, or you can't modify them etc. So, I decided to write my...
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Spectral characterization of matchings in graphs
December 19, 2014
We (Sudipta Mallik and I) just submitted our paper on the "Spectral characterization of matchings in graphs". It is based on our previous work on "Construction of real skew-symmetric matrices from...
- lambda-tau paper got accepted December 04, 2014