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If we have a matrix and remove for example its last row and column, is

there a condition under which the new matrix has different minimum

eigenvalue than the original matrix?

By Cauchy theorem they might be equal.

The problem is that the scientific community places more value on absolute answers, but wicked problems are unanswerable because solutions involve tradeoffs and compromised objectives. There is no point of finality in the solution of wicked problems (Kunz & Rittel, 1972).

Refs:

Kunz, Werner, & Rittel, Horst. (1972). Information science: on the structure of its problems. Information Storage Research, 8, 95-98. doi: 10.1016/0020-0271(72)90011-3

I have a doubt regarding completeness of C[0, infinity) with respect to sup norm. Is the space Banach Space? Is it a Banach lattice?

Greeting and salutation!

I have a initial value differential equation with a unknown parameter, how can i solve it With Matlab ODE solver or other software????

With Best Regards

Hamed 

For example, Circle is not a function. Can any one explain with this inverse and implicit function theorem?

Solve the D.E.: $\frac{{d^2 y}}{{dx^2 }} + p\left( x \right)\frac{{dy}}{{dx}} + q \left( x \right)y = g\left( x \right)y^n$, where p, q and g are continuous functions in an interval (a,b) and n is a real number?

Let $\alpha\in[0,\infty)$ be any nonnegative irrational number. Do for any $\varepsilon>0$ there exist $m,n\in\mathbb{N}$ such, that $|n-\alpha m|<\varepsilon$?

Calculus

Do you have any idea about 2-quasinormal operators?

Hello

The series is 1/2 - 1/4 + 1/8 + 1/16 - 1/32 - 1/64 + 1/128 + 1/256 + 1/ 512 - 1/1024 - and continue this + + - - + + + - - - + + + + - - - - + + + + - - - - ... does this converge and if so what is the limit?