xal: тополоҗик

Information
has URI	http://lexvo.org/id/term/xal/%D1%82%D0%BE%D0%BF%D0%BE%D0%BB%D0%BE%D2%97%D0%B8%D0%BA

Meaning
means	(noun) the branch of pure mathematics that deals only with the properties of a figure X that hold for every figure into which X can be transformed with a one-to-one correspondence that is continuous in both directions topology, analysis situs