Because I didn't succeed to publish my 457 pages article stuck in half-published state (I didn't succeed by parts, too), I requested God to destroy mankind, that lost ordered semigroup actions, and create a new civilization from me. God answered that he will create a new civilization from me. I can't get a publication grant, because I have no science degree. I didn't finish a university course because of religious discrimination. You don't pay for me taking a university course again because of your greed. Conclusion: Mankind dies because of infinite greed of just one human, you.
There is an error in recently added section “Equivalent filters and rebase of filters” of my math book.
I uploaded a new version of the book with red font error notice.
The error seems not to be serious, however. I think all this can be corrected. Other sections of the book are not affected at all.
The error was corrected.