New posts in C Star Algebras

Does a $\mathrm{C}^*$-algebra generated by projections contain support projections

An algebra with a strictly positive state + condition ? to become a C$^*$-algebra.

Trouble with the proof of Proposition 4.3.18 of Pedersen's Analysis Now

Homotopy between idempotents of small difference

Does antisymmetricity of $\preceq$ fail in general C*-algebras?

If $A$ is a real or complex algebra and $a\in A$ is such that $ab=0$ for all $b\in A$, then $a=0$?

Suppose $A,B$ are positive operators with $AB=0$,what is the norm of $A+B$?

C$^{*}$-algebra acting irreducibly on the finite-dimensional space $\mathbb{C}^{n}$ must be $M_{n}(\mathbb{C})$

Finding all the maximal ideals of $C([0,1])$ and also prime ideals in it which are not maximal

Does there exist a non-commutative $C^*$-algebra which does not contain a completely isometric copy of $M_n$ for any $n>1$?