 # Teresa Lisbon

CBI, MSE

கல்யாணசுந்தரம் ஸ்ரீனிவாசன் கிருஷ்ணமூர்த்தி ரவிச்சந்திரன் ஐயர், या फिर संक्षेप में,

$$\color{red}{\large{\mathbf{Teresa\ Lisbon}}}$$

ನಾನು. I am a huge Aston Villa fan! My Google site is up here, you can check it out. мои специальный ответы :

• The last two numbers of this sequence are never prime?

• The ancient method of finding powers of numbers.

• Why 11 is the first number that should come to mind while doing round trips on a calculator.

• Here's a complicated polynomial. Wait, why is it positive?

• A diophantine equation of the simplest kind, but ever so useful to know.

• The loveliest irreducibility criteria that every person who ever saw polynomials needs to know . Spoiler alert : this is very very beautiful.

• AM-GM trick, especially in a situation where the objective function for maximization is asymmetric.

• Just add magic. Correction : just add one to solve this equation!

• Oh , infinite series, I hate you, and this is why. But I love you too!

• Uniqueness condition in a ring leads to nice invertibility criteria.

• A 5 dimensional matrix with entries exactly from 1 to 9, with determinant exactly equal to 271. Try to make one yourself, then see the trick of utter beauty.

Note : Formerly known as астон вилла олоф меллберг, but you can call me Lisbon.

Top Questions

## Suppose $M$ is an $m \times n$ matrix such that all rows and columns of $M$ sum to $1$. Show that $m=n$

asked Sep 6, 2016 at 9:15