maths trick - Notation ! ! WWCISZNORLU Inne is defined as belongs to ( a set ) does not belong to ( a set ) intersection of sets union of sets empty set set of natural numbers set of integers set of rational numbers set of real numbers set of nonnegative real numbers set of complex numbers n - dimensional Euclidean space space of column vectors with n real components n - dimensional complex linear space space of column vectors with n complex components Hilbert space V - 1 real part of the complex number z imaginary part of the complex number z modulus of complex number z 13 + iyl = ( x2 + y2 ) 1 / 2 , X , Y ER subset T of set S the intersection of the sets S and T the union of the sets S and T image of set S under mapping f composition of two mappings ( fog ) ( x ) = f ( g ( x ) ) column vector in C transpose of v ( row vector ) zero ( column ) vector norm scalar product ( inner product ) in C vector product in R3 mx n matrices determinant of a square matrix A trace of a square matrix A rank of matrix A transpose of matrix A TCS SAT SUT f ( S ) fog X y = x ' y X X y A . B . C det ( A ) tr ( A ) rank ( A ) AT - ShareChat
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