List of mathematical symbols

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The following mathematical symbols are used differently from Wikipedia:

Symbol Usage Interpretation Article LaTeX HTML Unicode
[math]\displaystyle{ \widehat{} }[/math] [math]\displaystyle{ \hat{a} }[/math] Reciprocal of [math]\displaystyle{ a }[/math]: [math]\displaystyle{ 1/a }[/math] resp. [math]\displaystyle{ a^{-1} }[/math] for [math]\displaystyle{ a \ne 0 }[/math] (read as "hat") \widehat{} U+0302
[math]\displaystyle{ \acute{} }[/math] [math]\displaystyle{ \acute{a} }[/math] Increment of [math]\displaystyle{ a }[/math]: [math]\displaystyle{ a - 1 }[/math] (read as "dec") \acute{} U+00B4
[math]\displaystyle{ \grave{} }[/math] [math]\displaystyle{ \grave{a} }[/math] Decrement of [math]\displaystyle{ a }[/math]: [math]\displaystyle{ a + 1 }[/math] (read as "inc") \grave{} U+0060
[math]\displaystyle{ \nu }[/math] [math]\displaystyle{ {}^{\nu} A }[/math] greatest        finite number: intersection of the complex or real set [math]\displaystyle{ A }[/math] for [math]\displaystyle{ {}^{\nu}\mathbb{C} := [-\nu, \; \nu] + i[-\nu, \nu] }[/math] \nu ν U+03BD
[math]\displaystyle{ \omega }[/math] [math]\displaystyle{ {}^{\omega} A }[/math] greatest mid-finite number: intersection of the complex or real set [math]\displaystyle{ A }[/math] for [math]\displaystyle{ {}^{\omega}\mathbb{C} := [-\omega, \omega] + i[-\omega, \omega] }[/math] \omega ω U+03C9
[math]\displaystyle{ \varsigma }[/math] [math]\displaystyle{ \varsigma = \max \mathbb{R} }[/math] greatest real number \varsigma ς U+03C2
d0 d0 [math]\displaystyle{ = \min \mathbb{R}_{\gt 0} }[/math] smallest positive real number d0 d0
[math]\displaystyle{ {}_b }[/math] [math]\displaystyle{ {}_b a = \log_b a }[/math] Logarithm to base [math]\displaystyle{ b }[/math] for [math]\displaystyle{ a \in \mathbb{C} \setminus \mathbb{R}_{\le 0} }[/math] (read as "b in a") {}_b
[math]\displaystyle{ {}_1 }[/math] [math]\displaystyle{ {}_1 x = x/||x|| }[/math] Unit vector to [math]\displaystyle{ x \ne 0 }[/math] {}_1
[math]\displaystyle{ \iota }[/math] [math]\displaystyle{ \iota = \pi/2 }[/math] Quarter of the circumference that the unit circle has \iota ι U+03B9
[math]\displaystyle{ \tau }[/math] [math]\displaystyle{ \tau = 2\pi }[/math] Circumference that the unit circle has \tau τ U+03C4
[math]\displaystyle{ \infty }[/math] [math]\displaystyle{ \infty \gg \varsigma^2 }[/math] Replacing [math]\displaystyle{ \pm0 }[/math] by [math]\displaystyle{ \pm\hat{\infty} }[/math] Infinity \infty ∞ U+221E
[math]\displaystyle{ \mathbb M }[/math] [math]\displaystyle{ {\mathbb{M}}_{\mathbb{R}} = {}^{\omega}{\mathbb{R}} \setminus {}^{\nu}{\mathbb{R}} }[/math] mid-finite numbers: [math]\displaystyle{ {\mathbb{M}}_{\mathbb{C}} := {\mathbb{M}}_{\mathbb{R}} + i{\mathbb{M}}_{\mathbb{R}} }[/math] \mathbb{M} 𝕄 U+1D544
[math]\displaystyle{ {}^{\dot{}} }[/math] [math]\displaystyle{ \dot{A} }[/math] point-symmetric set [math]\displaystyle{ A }[/math] \dot ˙ U+02D9
[math]\displaystyle{ {}^{\ll} }[/math] [math]\displaystyle{ A^{\ll} }[/math] Set [math]\displaystyle{ A }[/math] without boundary [math]\displaystyle{ \partial A }[/math] given by min [math]\displaystyle{ \{d(x, y) : x \in A°, y \in A^{\prime}\} = \hat{\nu} }[/math] {}^{\ll} ≪ U+226A
[math]\displaystyle{ ' }[/math] [math]\displaystyle{ A' }[/math] Complement of the set [math]\displaystyle{ A }[/math] Complement (set theory) ' U+0027
[math]\displaystyle{ \curvearrowleft }[/math] [math]\displaystyle{ \curvearrowleft {a} }[/math] Predecessor of [math]\displaystyle{ a }[/math] (read as "pre") \curvearrowleft U+21B6
[math]\displaystyle{ \curvearrowright }[/math] [math]\displaystyle{ \curvearrowright {a} }[/math] Successor of [math]\displaystyle{ a }[/math] (read as "post") \curvearrowright U+21B7
[math]\displaystyle{ \Box }[/math] End of proof \Box U+25A1
[math]\displaystyle{ \triangle }[/math] End of definition \triangle Δ U+2206

See also