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Mathematical Symbols
43
Flashcards
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Additive inverse
-a or -1 \times a
Multiplicative inverse or reciprocal
a^{-1} or \frac{1}{a}
Subset
\subseteq
Superset
\supseteq
Union of sets
\cup
Intersection of sets
\cap
Cartesian product of sets
\times
Direct sum
\oplus
Direct product
\otimes
Empty set
\emptyset or \{\}
Natural numbers
\mathbb{N}
Integers
\mathbb{Z}
Identity element for addition
0
Rational numbers
\mathbb{Q}
Real numbers
\mathbb{R}
Complex numbers
\mathbb{C}
Infinity
\infty
Right angle
\angle ABC = 90^{\circ}
Angle measurement
\angle ABC
Proportional to
\propto
Parallel lines
\parallel
Perpendicular lines
\perp
Equivalent
\equiv
Identity element for multiplication
1
Approximately equal to
\approx
Not equal to
\neq
Much greater than
\gg
Much less than
\ll
Therefore
\therefore
Because
\because
For all
\forall
Exists
\exists
Unique existence
\exists!
Element-wise addition in vectors
\vec{a} + \vec{b}
Integral symbol
\int
Dot product of vectors
\vec{a} \cdot \vec{b}
Cross product of vectors
\vec{a} \times \vec{b}
Matrix multiplication
\mathbf{A} \times \mathbf{B}
Derivative notation
\frac{dy}{dx} or f'(x)
Limit notation
\lim
Summation notation
\sum
Pi product notation
\prod
Set membership
\in
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