I have uploaded a new version of my book with an error corrected: the definition of principal staroids and some related stuff were wrong.

read moreConjecture: Every time when an unproved result seems obvious, we refer to an unproved conjecture (from which it follows) in our mind

read moreToday I have noticed a new simple to prove theorem which is missing in my article: Theorem If $latex ( \mathfrak{A}; \mathfrak{Z})$ is a join-closed filtrator and both $latex \mathfrak{A}$ and $latex \mathfrak{Z}$ are complete lattices, then for every $latex S \in…

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