I have uploaded a new version of my book with an error corrected: the definition of principal staroids and some
Continue readingMonth: May 2014
An informal “conjecture”
Conjecture: Every time when an unproved result seems obvious, we refer to an unproved conjecture (from which it follows) in
Continue readingA simple theorem not noticed before
Today I have noticed a new simple to prove theorem which is missing in my article: Theorem If is a
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