Hauv qhov projective geometry, kev sib tsoo yog ib qho-rau-ib thiab mus rau hauv daim ntawv qhia los ntawm ib qhov projective mus rau lwm qhov, lossis los ntawm qhov projective qhov chaw rau nws tus kheej, xws li cov duab ntawm cov ntsiab lus collinear yog lawv tus kheej collinear.
txhais li cas los ntawm co linear?
Colinearity: 1. Feem ntau, kev npaj ntawm ib ntu hauv tib txoj kab kev txiav txim raws li lwm ntu.
dab tsi yog collinear hauv lej?
Peb lossis ntau lub ntsiab lus yog hais tias yog collinear yog tias lawv txhua tus dag ntawm tib txoj kab ncaj nraim. Yog hais tias A, B thiab C yog collinear ces.. Yog tias koj xav qhia tias peb lub ntsiab lus yog collinear, xaiv ob kab ntu, piv txwv li. thiab.
Dab tsi yog collinear daim duab peb sab?
Peb los yog ntau tshaj,,, …, hais tias yog collinear yog tias lawv dag ntawm ib kab ncaj nraim.. Ib kab ntawm cov ntsiab lus dag, tshwj xeeb tshaj yog tias nws muaj feem xyuam nrog daim duab geometric xws li daim duab peb sab, qee zaum hu ua axis. Ob lub ntsiab lus yog trivally collinear txij li ob lub ntsiab lus txiav txim ib kab.
Dab tsi yog collinear transformation?
A kev hloov pauv ntawm lub dav hlau uas hloov cov ntsiab lus sib dhos rau hauv cov ntsiab lus sib dhos. Ib qhov projective collineation hloov pauv txhua daim ntawv ib-dimensional projectively, thiab ib tug foundations collineation yog ib tug collineation uas tawm tag nrho cov kab los ntawm ib tug taw tes thiab cov ntsiab lus los ntawm ib tug kab invariant.
