null set - a empty set or a void set, subset - a set of which all the elements are contained in another set., universal set - a set that contains every thing , # - cardinal number, = - union which means all, {} - empty set, AUB - a union of two sets, A B - Set difference, B\A - B without A, A' - compliment of A,

maths

طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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