חבורה למחצה שאינה קומוטטיבית בשום מקום

במתמטיקה, חבורה למחצה שאינה קומוטטיבית בשום מקום היא חבורה למחצה S כך שלכל a ו-b ב-S, אם ab = ba אז a = b. חבורה למחצה S אינה קומוטטיבית בשום מקום אם ורק אם כל שני איברים של S הם הופכיים זה לזה (במובן החלש).

אפיון של חבורות למחצה שאינן קומוטטיביות בשום מקום

חבורות למחצה שאינן קומוטטיביות בשום מקום ניתן לאפיון בכמה דרכים שונות. אם S היא חבורה למחצה, התנאים הבאים שקולים:

  • S אינה קומוטטיבית בשום מקום.
  • S היא רצועה מלבנית.
  • עבור כל a ו- b ב-S, מתקיים: aba=a.
  • עבור כל a, ‏b ו- c ב-S, מתקיים: a²=a וגם abc=ac.

Read other articles:

Lamatti Riawang, Bulupoddo, Sinjai

Lamatti RiawangDesaLokasi Desa Lamatti Riawang Koordinat: 5° 05′ 49.43″ S, 120° 10′ 30.49″ EPeta lokasi Desa Lamatti RiawangNegara IndonesiaProvinsiSulawesi SelatanKabupatenSinjaiKecamatanBulupoddoKode Kemendagri73.07.06.2006 Luas11,3641 km²Jumlah penduduk2,129 jiwaKepadatan187,34 jiwa/km² Lamatti Riawang adalah salah satu desa yang terletak di kecamatan Bulupoddo, Kabupaten Sinjai, Sulawesi Selatan, Indonesia. Sejarah Desa Lamatti Riawang merupakan hasil pemekaran Desa Lamat...

 

Platinum Tower (Dubai)

Artikel ini membahas mengenai bangunan, struktur, infrastruktur, atau kawasan terencana yang sedang dibangun atau akan segera selesai. Informasi di halaman ini bisa berubah setiap saat (tidak jarang perubahan yang besar) seiring dengan penyelesaiannya. Platinum TowerPlatinum Tower dalam pembangunan tanggal 10 Januari 2008Informasi umumLokasiDubai, Uni Emirat ArabPerkiraan rampung2009Data teknisJumlah lantai44Desain dan konstruksiArsitekDAR ConsultPengembangNakheel Platinum Tower merupakan seb...

 

Bavent

Commune in Normandy, FranceBaventCommuneThe Lavoir Coat of armsLocation of Bavent BaventShow map of FranceBaventShow map of NormandyCoordinates: 49°13′54″N 0°11′05″W / 49.2317°N 0.1847°W / 49.2317; -0.1847CountryFranceRegionNormandyDepartmentCalvadosArrondissementLisieuxCantonCabourgIntercommunalityNormandie-Cabourg-Pays d'AugeGovernment • Mayor (2020–2026) Jean-Luc Garnier[1]Area118.45 km2 (7.12 sq mi)Population...

U.S. Route 16 in Michigan

Former U.S. Highway in Michigan This article is about the section of highway in Michigan. For the entire length of the current highway, see U.S. Route 16. US Highway 16US 16 highlighted in red on a modern mapRoute informationMaintained by MSHDLength210.643 mi[1] (338.997 km)ExistedNovember 11, 1926 (1926-11-11)[2]–1962 (1962)[3][4]HistoryReplaced by I-96Major junctionsWest endCar ferry docks in MuskegonMajor intersectio...

 

Pier Luigi Nervi

Pier Luigi Nervi Pier Luigi Nervi (Sondrio, 21 giugno 1891 – Roma, 9 gennaio 1979) è stato un ingegnere e imprenditore italiano, specializzato nell'edilizia civile. Fu socio dell'Accademia nazionale delle scienze e autore di alcune grandi opere. Collaborò con architetti di fama internazionale, tra cui Le Corbusier e Louis Kahn. Indice 1 Biografia 2 Filosofia operativa 3 Onorificenze 4 Opere 5 Scritti 6 Archivio e biblioteca personale 7 Note 8 Bibliografia 9 Voci correlate 10 Altri progett...

 

Google Fit

Google FitTangkapan layar Google Fit berjalan di Android 9.0 PieTipeperangkat lunak dan activity tracker Versi pertama28 Oktober 2014; 9 tahun lalu (2014-10-28)GenreInformatika kedokteran, Kebugaran fisikLisensiProprietaryBahasaDaftar bahasa Bulgaria, Katalan, Kroasia, Ceko, Denmark, Belanda, Inggris, Finlandia, Prancis, Jerman, Yunani, Hindi, Hongaria, Indonesia, Italia, Jepang, Korea, Latvia, Lithuania, Melayu, Norwegia, Polandia, Portugis, Rumania, Rusia, Cina Sederhana, Slovakia, Spa...

Robert Luce

American politician For the mathematical psychologist, see Robert Duncan Luce. Robert LuceMember of theU.S. House of Representatives from MassachusettsIn officeMarch 4, 1919 – January 3, 1935Preceded byWilliam Henry CarterSucceeded byRichard M. RussellConstituency13th district (1919–33)9th district (1933–35)In officeJanuary 3, 1937 – January 3, 1941Preceded byRichard M. RussellSucceeded byThomas H. EliotConstituency9th district42nd Lieutenant Governor of Massachusett...

 

WTVS

PBS member station in Detroit Not to be confused with Television South, the former ITV franchisee for South East England. For other uses, see TVS (disambiguation). WTVSDetroit, MichiganUnited StatesChannelsDigital: 20 (UHF)Virtual: 56BrandingDetroit PBSProgrammingAffiliations56.1: PBSfor others, see § SubchannelsOwnershipOwnerDetroit Public MediaSister stationsWRCJ-FMHistoryFirst air dateOctober 3, 1955 (68 years ago) (1955-10-03)Former channel number(s)Analog: 56 (UHF, 19...

 

Première dame des États-Unis

Première dame des États-Unis(en) First Lady of the United States of America Titulaire actuelleJill Bidendepuis le 20 janvier 2021 (3 ans, 3 mois et 12 jours) Création 30 avril 1789 Première titulaire Martha Washington[1] Résidence officielle Maison-Blanche, Washington D.C. Site internet Site officiel Liste des Premières dames des États-Unis modifier  Première dame[a] des États-Unis (en anglais : First Lady of the United States of America ou simplement First ...

Charles Spaak

Questa voce o sezione sull'argomento sceneggiatori non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. Charles Spaak Charles Spaak (Saint-Gilles, 25 maggio 1903 – Nizza, 4 marzo 1975) è stato uno sceneggiatore belga. Biografia Sia il padre che la madre erano politici belgi. Il padre, Paul, era avvocato e d...

 

List of tallest structures in Switzerland

Map all coordinates using OpenStreetMap Download coordinates as: KML GPX (all coordinates) GPX (primary coordinates) GPX (secondary coordinates) Roche Tower – Switzerland's tallest building since 2015 Grande Dixence Dam, 285 m Blosenbergturm 217 m Hammetschwand Elevator, 157 m Basler Messeturm, 105 m Münster of Bern, 100 m A list of tallest structures in Switzerland. This list may be incomplete and incorrect.   indicates a structure that is no longer standing...

 

國民陣線

国民阵线Barisan NasionalNational Frontباريسن ناسيونلபாரிசான் நேசனல்国民阵线标志简称国阵，BN主席阿末扎希总秘书赞比里署理主席莫哈末哈山总财政希山慕丁副主席魏家祥维纳斯瓦兰佐瑟古律创始人阿都拉萨成立1973年1月1日 (1973-01-01)[1]设立1974年7月1日 (1974-07-01)前身 联盟总部 马来西亚  吉隆坡 50480 秋傑区敦依斯迈路太子世贸中心（英�...

Luiz Inácio Lula da Silva

35th and 39th President of Brazil (2003–2011, 2023–present) Lula redirects here. For other uses, see Lula (disambiguation). You can help expand this article with text translated from the corresponding article in Portuguese. (November 2022) Click [show] for important translation instructions. View a machine-translated version of the Portuguese article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors a...

 

György Lukács

Hungarian philosopher and critic (1885–1971) This article is about the philosopher. For the politician, see György Lukács (politician). The native form of this personal name is Lukács György. This article uses Western name order when mentioning individuals. György LukácsLukács in 1952BornGyörgy Bernát Löwinger13 April 1885Budapest, Austria-HungaryDied4 June 1971(1971-06-04) (aged 86)Budapest, Hungarian People's RepublicEducationRoyal Hungarian University of Kolozsvár (Dr...

 

User talk:Sam Spade

This user may have left Wikipedia. Sam Spade has not edited Wikipedia since April 2007. As a result, any requests made here may not receive a response. If you are seeking assistance, you may need to approach someone else. RETIRED This user is no longer active on Wikipedia as of April 2007. Current time: Thursday, June 13, 2024, 00:05 (UTC) Leave a message Mr. Spade, A list of Muslim scholars of Islamic Studies are interested in cleaning up the Islam pages, little by little. Some of us are pr...

Wiyaga

Sebuah orkestra gamelan dimainkan oleh wiyaga pada pelantikan Paku Alam VIII di Pura Pakualaman. Wiyaga (bahasa Jawa: ꦮꦶꦪꦒ, translit. wiyaga, har. 'penabuh gamelan', diucapkan [wijɔgɔ])[1] merupakan istilah dalam seni karawitan, berarti sekumpulan orang yang mempunyai keahlian khusus menabuh gamelan, terutama dalam megiringi upacara adat dan seni pertunjukan. Wiyaga juga disebut dengan niyaga atau nayaga yang berarti pengrawit atau penabuh.[2&#...

 

Aaron Lynch (American football)

American gridiron football player (born 1993) American football player Aaron LynchLynch with the Chicago Bears in 2019Personal informationBorn: (1993-02-08) February 8, 1993 (age 31)Cleveland, Ohio, U.S.Height:6 ft 5 in (1.96 m)Weight:285 lb (129 kg)Career informationHigh school:Island Coast(Cape Coral, Florida)College:Notre Dame (2011)South Florida (2012–2013)Position:Defensive endNFL draft:2014 / Round: 5 / Pick: 150Career history San Fran...

 

Ghajar

Village on the Lebanese-Syrian border For Iranian royal family, see Qajar dynasty. PlaceGhajar غجرע'ג'ר‎GhajarThe Golan on the map of Syria; Ghajar on the map of the Golan.Show map of SyriaGhajarGhajar (the Golan Heights)Show map of the Golan HeightsCoordinates: 33°16′22″N 35°37′23″E / 33.27278°N 35.62306°E / 33.27278; 35.62306Grid position208/297 PALCountryOn the border between Lebanonand the Israeli-occupied areaof the Golan Heights (de j...

Colors

Colors TVDiluncurkan21 Juli 2008PemilikViacom 18Negara IndiaSaluran seindukMTV, Nick, VH1, Studio 18Situs webhttp://colorstv.com/ Colors TV merupakan televisi hiburan berbahasa hindi yang dimiliki oleh Viacom 18, yang diluncurkan pada 21 Juli 2008.[1] Pesaingnya adalah Zee TV, Sony TV, Star Plus, dan STAR Bharat. Acara yang sukses adalah Balika Vadhu,[2] Uttaran, Chakravartin Ashoka Samrat,[3] Thapki,[3] Swaragini[3] & Tu Aashiqui.[4][5&...

 

Mandeville (Jamaïque)

Pour les articles homonymes, voir Mandeville. Cet article est une ébauche concernant une localité jamaïcaine. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Mandeville Administration Pays Jamaïque Comté Midlesex Paroisse Manchester Géographie Coordonnées 18° 02′ 00″ nord, 77° 30′ 00″ ouest Altitude 628 m Localisation Géolocalisation sur la carte : Jamaï...