2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
feem ntau, cov khoom ntawm ob pawg S thiab T yog subgroup yog thiab tsuas yog ST=TS, thiab ob pawg sub yog hais kom permute.
Yuav ua li cas rau ib pab pawg Ib pawg?
A subset H ntawm pab pawg G yog ib pab pawg ntawm G yog tias nws tsis yog thiab kaw hauv qab cov khoom thiab hloov pauv . … Cov pab pawg neeg yog tus kheej ntawm pab pawg: yog G yog ib pab pawg uas muaj tus kheej eG, thiab H yog pab pawg G nrog tus kheej eH, then eH=eG.
Vim li cas kev sib tshuam ntawm ob pawg A subgroup?
Vim tsawg kawg yog lub cim qhia tus kheej 'e' yog ib txwm muaj rau H1 thiab H2. Vim H1 thiab H2 yog pab pawg. Yog li no, H1 ∩ H2 yog ib pab pawg ntawm G thiab qhov ntawd yog peb txoj kev xav piv txwv li kev sib tshuam ntawm ob pawg ntawm ib pab pawg rov qab ua pawg.
Puas yog cov khoom ntawm ob pawg pawg ib txwm muaj?
Subset Khoom ntawm Ib pawg Sub is Normal.
Puas yog union ntawm ob pawg sub yog ib pawg sub yog tsis muab piv txwv?
Yog ib pab G yog ib lub koom haum ntawm ob pawg H1 thiab H2, ces peb yuav tsum muaj H1⊄H2 thiab H2⊄H1, txwv tsis pub G=H1 lossis G=H2 thiab qhov no tsis tuaj yeem ua H1, H2 yog qhov tsim nyog. pab pawg. Ces G=H1∪H2 is a subgroup of G, txwv tsis pub part (a). Yog li, ib pab pawg twg tsis tuaj yeem yog ib lub koom haum ntawm pawg sub.
Pom zoo:
Qhov txawv ntawm cov khoom lag luam thiab cov khoom lag luam yog dab tsi?
Ib yam khoom yog ib yam khoom uas tau muab tso rau hauv kev lag luam kom tau txais, mloog, lossis siv, thaum qhov kev pabcuam yog yam khoom tsis tsim nyog, uas tshwm sim los ntawm tawm ntawm ib qho los yog ntau tus neeg. … Feem ntau cov kev pabcuam yog qhov tsis muaj tseeb, tab sis cov khoom tsis yog ib txwm pom tau.
Thaum lub sijhawm ua pa ntawm tes uas ntawm cov hauv qab no tso tawm los ntawm cov khoom lag luam?
Thaum lub sijhawm ua pa aerobic cellular, qabzib reacts nrog oxygen, tsim ATP uas tuaj yeem siv los ntawm tes. carbon dioxide thiab dej yog tsim los ntawm cov khoom lag luam. Hauv kev ua pa ntawm tes, qabzib thiab oxygen hnov qab tsim ATP.
Dab tsi ntawm cov hauv qab no yog qhov tsis zoo ntawm kev lag luam kev lag luam?
Nug: Qhov twg hauv qab no yog qhov tsis zoo ntawm kev faib tawm? Kev txiav txim siab los ntawm cov thawj coj ze tshaj plaws rau kev ua haujlwm. Cov thawj coj muaj peev xwm tau txais kev txawj ntse hauv lawv txoj haujlwm. Kev txiav txim siab los ntawm ib tus thawj coj yuav cuam tshuam tsis zoo rau cov txiaj ntsig ntawm tag nrho lub tuam txhab.
Thaum cov kws lag luam lag luam tab tom kos cov piv txwv ntawm kev thov thiab cov khoom siv?
Thaum cov kws lag luam lag luam tau kos cov piv txwv ntawm kev thov thiab muab khoom nws yog ib qho kev kos duab qhov kev thov lossis cov khoom siv nkhaus uas nyob ze rau kab rov tav? Thaum cov kws tshawb nrhiav nyiaj txiag tau kos cov piv txwv ntawm qhov kev thov lossis cov khoom siv nkhaus uas nyob ze rau kab rov tav, lawv xa mus rau qhov kev thov lossis cov khoom nkhaus raws li elastic.
Vim li cas cov neeg ua lag luam suav tias yog kev lag luam kev lag luam?
Kev ua lag luam tuaj yeem raug saib raws li kev txuas ntxiv ntawm kev sib tw, hauv qhov kev pom ntawm kev ua lag luam ib txwm suav nrog pom tias qee yam khoom tuaj yeem yuav hauv qhov chaw tshwj xeeb rau qee tus nqi tshwj xeeb, tej zaum tom qab ntawd muab tso ua ke hauv cov txheej txheem tsim khoom los tsim ib yam dab tsi uas tuaj yeem muag hauv ib qho tshwj xeeb… Vim li cas cov neeg ua lag luam tseem ceeb rau kev lag luam?
