In the 19th century J. Holmes & Pollock tsim cov lus qhuab qhia no uas txhob txwm ua rau raug mob ntawm txhua yam yam tsis muaj kev txiav txim siab tau ua tiav.
Dab tsi yog pigeon qhov kev xav hauv txoj cai ntawm kev tsim txom?
Yuav muaj tsis muaj lub hauv paus ntsiab lus ntawm kev lav phib xaub thiab yog tias tus foob tuaj yeem tso nws qhov tsis ncaj ncees rau hauv ib qho ntawm cov nquab-qhov, txhua qhov muaj cov ntawv sau ua phem, nws yuav ua tiavTxoj kev xav no yog tseem hu ua 'Pigeon-qhov txoj kev xav'. Yog hais tias tsis muaj pigeon-qhov uas tus foob rooj plaub yuav haum, tus neeg raug foob tsis tau ua phem.
Puas yog nquab lossis nquab?
verb (siv nrog khoom), pi·geon·holed, pi·geon·hol·ing. muab tso rau qhov chaw meej lossis meej qhov chaw hauv qee qhov kev ua kom zoo: rau pigeonhole cov tswv yim tshiab.… muab tso tseg rau tam sim no, tshwj xeeb tshaj yog nrog lub hom phiaj ntawm kev tsis quav ntsej lossis tsis nco qab, feem ntau tsis muaj hnub kawg: rau nquab qhov kev caw uas tsis xav tau.
Lub homphiaj ntawm pigeonhole yog dab tsi?
Txoj cai nquab hais tias yog tias ntau dua n nquab tau muab tso rau hauv n pigeonholes, qee qhov nquab yuav tsum muaj ntau dua ib tus nquabThaum lub hauv paus ntsiab lus pom tseeb, nws qhov cuam tshuam yog qhov xav tsis thoob. Yog vim li cas yog lub hauv paus ntsiab lus ua pov thawj qhov muaj nyob (lossis impossibility) ntawm ib qho phenomenon.
Dab tsi yog txoj ntsiab cai dav dav ntawm pigeonhole?
Tus Npuag Generalized. Txoj Cai. Lub hauv paus ntsiab lus pigeonhole hais tias yuav tsum muaj ntawm . tsawg ob yam khoom hauv tib lub thawv thaum muaj ntau dua . khoom tshaj lub thawv.
