Groepoïde (categorietheorie)

In de categorietheorie en de homotopie, beide deelgebieden van de abstracte algebra, veralgemeent een groepoïde de notie van een groep en van een categorie op verschillende gelijkwaardige manieren. Een groepoïde kan worden gezien als een:

Speciale gevallen zijn onder andere:

Groepoïdes worden vaak gebruikt om te redeneren over meetkundige objecten zoals variëteiten. Het begrip groepoïde werd in 1926 door Heinrich Brandt geïntroduceerd.

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Kadalan kembang Status konservasi Risiko Rendah (IUCN 3.1) Klasifikasi ilmiah Kerajaan: Animalia Filum: Chordata Kelas: Aves Ordo: Cuculiformes Famili: Cuculidae Genus: Phaenicophaeus Spesies: P. javanicus Nama binomial Phaenicophaeus javanicusHorsfield, 1821 Sinonim Zanclostomus javanicus Kadalan kembang (bahasa Latin = Phaenicophaeus javanicus) adalah spesies burung dari keluarga Cuculidae, dari genus Phaenicophaeus. Burung ini merupakan jenis burung pemakan laba-laba, belalang, ...

 

كونراد فريدريش لودفيج معلومات شخصية الميلاد 18 أغسطس 1821(1821-08-18)[1]لينغن  الوفاة 13 أغسطس 1890 (68 سنة) [1]هوكستر  الإقامة ألمانيا  مواطنة القيصرية الألمانية  الحياة العملية اختصار اسم علماء النبات Beckh.  المدرسة الأم جامعة توبنغنجامعة هالهجامعة هومبولت في برلي�...

 

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Representation of a data design This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Physical schema – news · newspapers · books · scholar · JSTOR (April 2008) (Learn how and when to remove this template message) Physical Data Model Options.[1] A physical data model (or database design) is a representatio...

 

Questa voce sugli argomenti allenatori di calcio tedeschi e calciatori tedeschi è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. Segui i suggerimenti dei progetti di riferimento 1, 2. Edmund Conen Nazionalità Germania Ovest Altezza 178 cm Peso 76 kg Calcio Ruolo Allenatore (ex attaccante) Carriera Giovanili 1924-1928 SV Ürzig1928-1932 Saarbrücken Squadre di club1 1932-1935 Saarbrücken33 (25)1938-1943 Kickers Stoccarda3 (3)1943-1...

 

National forest in California, United States Angeles National ForestThe San Gabriel Mountains, part of the Angeles National Forest. The southwest view from Islip Saddle shows Bear Creek, a tributary of the San Gabriel River that lies within the San Gabriel Wilderness, and Twin Peaks (7,761 feet (2,366 m)).LocationLos Angeles, San Bernardino, and Ventura counties, CaliforniaNearest cityLos AngelesCoordinates34°20′N 118°08′W / 34.333°N 118.133°W / 34.33...

Biblioteca Nacional de EspañaLokasiMadrid, SpanyolDidirikan1712; 311 tahun lalu (1712)Landasan hukumSurat Keputusan 1581/1991pada tanggal 31 Oktober.CollectionBarang yang dikoleksiBuku, jurnal, surat kabar, majalah, rekaman suara dan musik, paten, basis data, peta, prangko, grafis, gambar dan naskahUkuran26,000,000 item, termasuk 15,000,000 buku dan bahan cetak lainnya, 30,000 manuskrip, 143,000 surat kabar dan serial, 4,500,000 bahan grafis, 510,000 skor musik, dllPerpustakaan depositY...

 

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Russian federal subjects compared by Human Development Index Federal subjects of Russia by HDI (2016) Legend:   > 0.950   0.900 – 0.950   0.850 – 0.900   0.800 – 0.850 This is a list of Russian federal subjects by Human Development Index as of 2019 (2021 data - Analytical Center for the Government of the Russian Federation).[1] Rank Federal district HDI (2019)[1] Very high human development 1  Moscow 0.940 2  Saint Pet...

Disease outbreak in Poland You can help expand this article with text translated from the corresponding article in Polish. (December 2022) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic ...

 

Book by Abbé Augustin Barruel Memoirs Illustrating the History of Jacobinism Title Page of the First English Edition of Memoirs Illustrating the History of Jacobinism, 1799.AuthorAbbé Augustin BarruelTranslatorRobert CliffordCountryEnglandLanguageEnglishPublisherHudson & GoodwinPublication date1798–1799 Memoirs Illustrating the History of Jacobinism (French: Mémoires pour servir à l’histoire du Jacobinisme) is a book by Abbé Augustin Barruel, a French Jesuit priest. It was writte...

 

Tahar Rahim nel 2014 Tahar Rahim (in arabo طاهر رحيم‎?; Belfort, 4 luglio 1981) è un attore francese di origine algerina. È conosciuto soprattutto per il suo ruolo da personaggio principale, Malik El Djebena, nel premiatissimo film francese Il profeta di Jacques Audiard del 2009, venendo premiato con il Premio César per il migliore attore e l’European Film Awards per il miglior attore. Nel 2020 ha ricevuto consensi per la sua interpretazione nel film The Mauritanian, p...

Region of the Earth Polar desert with ground pattern characteristic of freeze-thaw alternation[citation needed]Polar deserts are the regions of Earth that fall under an ice cap climate (EF under the Köppen classification). Despite rainfall totals low enough to normally classify as a desert, polar deserts are distinguished from true deserts (BWh or BWk under the Köppen classification) by low annual temperatures and evapotranspiration. Most polar deserts are covered in ice sheets, ice...

 

Medical conditionPiebaldismOther namesPBT[1]This condition affects melanocyte developmentSpecialtyDermatology Piebaldism refers to the absence of mature melanin-forming cells (melanocytes) in certain areas of the skin and hair. It is a rare autosomal dominant disorder of melanocyte development.[2]: 867  Common characteristics include a congenital white forelock, scattered normal pigmented and hypopigmented macules and a triangular shaped depigmented patch on th...

 

Lev Davidovich Landau Lev Davidovich Landau (Лев Давидович Ландау, 22 Januari 1908 – 1 April 1968) ialah fisikawan Uni Soviet. Landau menyelesaikan mata pelajaran sekolahnya pada usia 13. Pada 1922, Landau mendaftarkan diri di Jurusan Fisika Universitas Leningrad. Setelah lulus, ia memulai karier ilmiahnya di Institut Teknik Fisika Leningrad. Antara 1932-1937, Landau mengepalai Jurusan Teoretis Institut Teknik Fisika Ukraina di Kharkov (kini di Ukraina). Pada...

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Political concept Ethnopluralism or ethno-pluralism, also known as ethno-differentialism,[1][2] is a far-right political model which attempts to preserve separate and bordered ethno-cultural regions.[3][4] According to its promoters, significant foreign cultural elements in a given region ought to be culturally assimilated to seek cultural homogenization in this territory, in order to let different cultures thrive in their respective geographical areas.[5&#...

 

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كرة القدملاعب يسدد الكرة باتجاه المرمىمعلومات عامةأعلى هيئة منظمة الاتحاد الدولي لكرة القدم نشأة 1848 بلد المنشأ المملكة المتحدة لبريطانيا العظمى وأيرلندا المنتسبون  القائمة ... لاعب كرة قدم — مدرب كرة قدم — مسؤول في مباراة — مدير رياضي — كشاف (كرة قدم) — فريق كرة قدم — pe...

 

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