On the Choice of a Kernel Function in Symmetric Spaces
The book “Pattern recognition: the method of potential functions” was published in Soviet Union more than 45 years ago. It was never translated to English and many ideas of the book remained unknown outside of Russia. We present here a sligtly abridged version of Chapter III.3 of the book. Technical details of some proofs are omitted and replaced by a short sketch of the main steps of the proof. An interested reader can either fill those details or consult the original Russian edition.