Avatar for squadette
Википедия рулит. http://en.wikipedia.org/wiki/Cardinality There are two approaches to cardinality – one which compares sets directly using bijections and injections, and another which uses cardinal numbers.[1]
Comment
http://en.wikipedia.org/wiki/Cardinal_number Cardinality is defined in terms of bijective functions. ‎· псы в рапиде
1 2 3 4 5 6 7 8 9 10

2015-2018 Mokum.place