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sudut tegak

Symbol · Math symbols · U+221F

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∀untuk semua ∁Complement ∂pembezaan separa ∃wujud ∄There Does Not Exist ∅set kosong ∆kenaikan ∇Nabla ∈unsur ∉bukan unsur ∊Small Element Of ∋mengandungi sebagai ahli ∌Does Not Contain As Member ∍Small Contains As Member ∎penamat bukti ∏hasil darab n-ner ∐N-Ary Coproduct ∑hasil tambah n-ner

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