Txoj kev tshaj plaws uas suav tsis txheeb tau qhia yog nyob rau hauv kev txiav txim siab lub sijhawm (0, 1) ntawm tus lej tiag. Los ntawm qhov tseeb no, thiab ib-rau-ib muaj nuj nqi f(x)=bx + a nws yog ib qho yooj yim corollary los qhia tias ib ntus (a, b) ntawm tus lej tiag yog suav tsis txheeb..
Dab tsi ua rau ib yam dab tsi suav tsis txheeb?
Ib txheej suav suav tsis txheeb yog tias nws cov ntsiab lus tuaj yeem muab tso rau hauv ib-rau-ib tsab ntawv nrog cov txheej txheem ntawm tus lej. … Kev suav suav tsis txheeb yog qhov sib piv rau suav tsis txheeb, uas piav txog ib txheej uas loj heev, suav tsis tau txawm tias peb khaws suav mus tas li.
Yuav ua li cas koj thiaj paub yog tias qhov teeb meem tsis kawg?
Lub teeb uas muaj qhov pib thiab qhov kawg yog qhov kawg, tab sis yog tias nws tsis muaj qhov pib lossis qhov xaus, nws yog qhov kawg. Yog hais tias lub teeb muaj ib tug tsawg tus naj npawb ntawm cov ntsiab lus, ces nws yog finite whereas yog nws muaj ib tug unlimited tooj ntawm cov ntsiab lus, nws yog infinite.
Koj ua pov thawj li cas suav tsis txheeb?
A set X yog suav tsis txheeb yog hais tias muaj ib tug bijection ntawm X thiab Z. Yuav ua pov thawj ib set yog suav suav infinite, koj tsuas yog yuav tsum tau qhia tias qhov no txhais yog txaus siab, i.e. koj yuav tsum qhia tias muaj kev sib cav ntawm X thiab Z.
Yuav ua li cas cardinality tsis kawg?
A set A yog suav tsis txheeb yog tiasthiab tsuas yog teem A muaj tib lub cardinality li N (tus lej ntuj). … Tsis tas li ntawd xwb, peb xaiv lub cardinality ntawm countably infinite teev li ℵ0 ("aleph null").
