Video: Dab tsi yog txuas graph piav nrog piv txwv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv ib qho tiav daim duab , muaj ib tug ntug nruab nrab ntawm txhua ib khub ntawm vertices nyob rau hauv lub daim duab . Qhov thib ob yog ib piv txwv ntawm a txuas daim duab . Hauv ib kev sib txuas , nws tuaj yeem tau txais los ntawm txhua qhov vertex hauv lub daim duab nyob rau hauv txhua rooj plaub daim duab los ntawm aseries ntawm ntug, hu ua txoj kev.
Kuj paub, dab tsi yog daim duab txuas?
Txuas Graph . A daim duab uas yog txuas nyob rau hauv kev nkag siab ntawm ib qho chaw topological, piv txwv li, muaj txoj hauv kev los ntawm ib qho taw tes mus rau lwm qhov chaw hauv lub daim duab . A daim duab uas tsis yog txuas hais tias bedisconnected.
Ib yam li ntawd, 2 txuas txuas yog dab tsi? A daim duab yog txuas yog tias rau ib qho ob vertices x, y ā V (G), muaj ib txoj kev uas nws qhov kawg yog xand y. A txuas daim duab G npe 2 - txuas , yog tias rau txhua qhov vertex x ā V (G), Gā x yog txuas . 2 − kev sib txuas.
Cov lus nug tseem yog, dab tsi yog lub network txuas?
Network txhais. A network yog ib txheej ntawm cov khoom (hu ua nodes los yog vertices) uas yog txuas ua ke. Cov kev sib txuas ntawm cov nodes yog hu ua edges orlinks. Yog hais tias tag nrho cov npoo yog bidirectional, los yog undirected, lub network yog ib qho tsis ncaj ncees lawm network (lossis undirectedgraph), raws li qhia los ntawm daim duab thib ob.
Koj qhia li cas yog tias daim duab txuas nrog lossis txiav tawm?
G npe txiav tawm , yog nws muaj ntau tshaj ib feem, i.e. yog nws tsis yog txuas . Ib in a txuas daim duab yog tus choj, yog nws tshem tawm a disconnected duab . Ib vertex a kev sib txuas yog ib tug cutvertex los yog articulation point, yog nws tshem tawm nplooj a disconnected daim duab.
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