LaTeX to CAS translator

This mockup demonstrates the concept of TeX to Computer Algebra System (CAS) conversion.

The demo-application converts LaTeX functions which directly translate to CAS counterparts.

Functions without explicit CAS support are available for translation via a DRMF package (under development).

The following LaTeX input ...

{\displaystyle f(a,z)\,}

${\displaystyle f(a,z)\,}$

... is translated to the CAS output ...

Semantic latex: f(a,z)

Confidence: 0

Mathematica

Translation: f[a , z]

Information

Sub Equations

f[a , z]

Free variables

a

z

Symbol info

Function without DLMF-Definition. We keep it like it is (but delete prefix \ if necessary).

Tests

Symbolic

Numeric

SymPy

Translation: f(a , z)

Information

Sub Equations

f(a , z)

Free variables

a

z

Symbol info

Function without DLMF-Definition. We keep it like it is (but delete prefix \ if necessary).

Tests

Symbolic

Numeric

Maple

Translation: f(a , z)

Information

Sub Equations

f(a , z)

Free variables

a

z

Symbol info

Function without DLMF-Definition. We keep it like it is (but delete prefix \ if necessary).

Tests

Symbolic

Numeric

Dependency Graph Information

Includes

$z$

$U(a,z)$

$V(a,z)$

$a$

Is part of

$f(a,-z),f(-a,iz){\text{ and }}f(-a,-iz).$

$f(-ia,ze^{(1/4)\pi i})$

$f(-ia,-ze^{(1/4)\pi i}),f(ia,-ze^{-(1/4)\pi i}){\text{ and }}f(ia,ze^{-(1/4)\pi i})$

$U(a,z)={\frac {1}{2^{\xi }{\sqrt {\pi }}}}\left[\cos(\xi \pi )\Gamma (1/2-\xi )\,y_{1}(a,z)-{\sqrt {2}}\sin(\xi \pi )\Gamma (1-\xi )\,y_{2}(a,z)\right]$

$V(a,z)={\frac {1}{2^{\xi }{\sqrt {\pi }}\Gamma [1/2-a]}}\left[\sin(\xi \pi )\Gamma (1/2-\xi )\,y_{1}(a,z)+{\sqrt {2}}\cos(\xi \pi )\Gamma (1-\xi )\,y_{2}(a,z)\right]$

$U(a,z)$

$V(a,z)$

$\lim _{z\rightarrow \infty }U(a,z)/e^{-z^{2}/4}z^{-a-1/2}=1\,\,\,\,({\text{for}}\,|\arg(z)|<\pi /2)$

$\lim _{z\rightarrow \infty }V(a,z)/{\sqrt {\frac {2}{\pi }}}e^{z^{2}/4}z^{a-1/2}=1\,\,\,\,({\text{for}}\,\arg(z)=0)$

$U(a,x)=D_{-a-{\tfrac {1}{2}}}(x)$

$V(a,x)={\frac {\Gamma ({\tfrac {1}{2}}+a)}{\pi }}[\sin(\pi a)D_{-a-{\tfrac {1}{2}}}(x)+D_{-a-{\tfrac {1}{2}}}(-x)]$

Description

b

solution

solution of equation

symmetry

behavior at infinity

arg

large value of z

function

large value

such pair

parabolic cylinder

Abramowitz

notation

Whittaker

Stegun

Complete translation information:

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  "formula" : "f(a,z)",
  "semanticFormula" : "f(a,z)",
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    "SymPy" : {
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      "translationInformation" : {
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        "freeVariables" : [ "a", "z" ],
        "tokenTranslations" : {
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  "includes" : [ "z", "U(a,z)", "V(a,z)", "a" ],
  "isPartOf" : [ "f(a,-z), f(-a,iz)\\text{ and  }f(-a,-iz).", "f(-ia,ze^{(1/4)\\pi i})", "f(-ia,-ze^{(1/4)\\pi i}), f(ia,-ze^{-(1/4)\\pi i})\\text{ and }f(ia,ze^{-(1/4)\\pi i})", "U(a,z)=\\frac{1}{2^\\xi\\sqrt{\\pi}}\\left[\\cos(\\xi\\pi)\\Gamma(1/2-\\xi)\\,y_1(a,z)-\\sqrt{2}\\sin(\\xi\\pi)\\Gamma(1-\\xi)\\,y_2(a,z)\\right]", "V(a,z)=\\frac{1}{2^\\xi\\sqrt{\\pi}\\Gamma[1/2-a]}\\left[\\sin(\\xi\\pi)\\Gamma(1/2-\\xi)\\,y_1(a,z)+\\sqrt{2}\\cos(\\xi\\pi)\\Gamma(1-\\xi)\\,y_2(a,z)\\right]", "U(a,z)", "V(a,z)", "\\lim_{z\\rightarrow\\infty}U(a,z)/e^{-z^2/4}z^{-a-1/2}=1\\,\\,\\,\\,(\\text{for}\\,|\\arg(z)|<\\pi/2)", "\\lim_{z\\rightarrow\\infty}V(a,z)/\\sqrt{\\frac{2}{\\pi}}e^{z^2/4}z^{a-1/2}=1\\,\\,\\,\\,(\\text{for}\\,\\arg(z)=0)", "U(a,x)=D_{-a-\\tfrac12}(x)", "V(a,x)=\\frac{\\Gamma(\\tfrac12+a)}{\\pi}[\\sin( \\pi a) D_{-a-\\tfrac12}(x)+D_{-a-\\tfrac12}(-x)]" ],
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  }, {
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  }, {
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  }, {
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  }, {
    "definition" : "Stegun",
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  } ]
}

Specify your own input

Formula input
Wikitext context	[[File:Parabolic cylindrical coordinates.png\|thumb\|right\|350px\|[[Coordinate system#Coordinate surface\|Coordinate surfaces]] of parabolic cylindrical coordinates. Parabolic cylinder functions occur when [[separation of variables]] is used on [[Laplace equation\|Laplace's equation]] in these coordinates]] In [[mathematics]], the '''parabolic cylinder functions''' are [[special function]]s defined as solutions to the differential equation {{NumBlk\|:\|<math>\frac{d^2f}{dz^2} + \left(\tilde{a}z^2+\tilde{b}z+\tilde{c}\right)f=0.</math>\|{{EquationRef\|1}}}} This equation is found when the technique of [[separation of variables]] is used on [[Laplace equation\|Laplace's equation]] when expressed in [[parabolic cylindrical coordinates]]. The above equation may be brought into two distinct forms (A) and (B) by [[completing the square]] and rescaling ''z'', called [[H. F. Weber]]'s equations {{harv\|Weber\|1869}}: :<math>\frac{d^2f}{dz^2} - \left(\tfrac14z^2+a\right)f=0</math>    (A) and :<math>\frac{d^2f}{dz^2} + \left(\tfrac14z^2-a\right)f=0.</math>     (B) If :<math>f(a,z)\,</math> is a solution, then so are :<math>f(a,-z), f(-a,iz)\text{ and }f(-a,-iz).\,</math> If :<math>f(a,z)\,</math> is a solution of equation (A), then :<math>f(-ia,ze^{(1/4)\pi i})\,</math> is a solution of (B), and, by symmetry, :<math>f(-ia,-ze^{(1/4)\pi i}), f(ia,-ze^{-(1/4)\pi i})\text{ and }f(ia,ze^{-(1/4)\pi i})\,</math> are also solutions of (B). ==Solutions== There are independent even and odd solutions of the form (A). These are given by (following the notation of [[Abramowitz and Stegun]] (1965)): :<math>y_1(a;z) = \exp(-z^2/4) \;_1F_1 \left(\tfrac12a+\tfrac14; \; \tfrac12\; ; \; \frac{z^2}{2}\right)\,\,\,\,\,\, (\mathrm{even})</math> and :<math>y_2(a;z) = z\exp(-z^2/4) \;_1F_1 \left(\tfrac12a+\tfrac34; \; \tfrac32\; ; \; \frac{z^2}{2}\right)\,\,\,\,\,\, (\mathrm{odd})</math> where <math>\;_1F_1 (a;b;z)=M(a;b;z)</math> is the [[confluent hypergeometric function]]. Other pairs of independent solutions may be formed from linear combinations of the above solutions (see Abramowitz and Stegun). One such pair is based upon their behavior at infinity: :<math> U(a,z)=\frac{1}{2^\xi\sqrt{\pi}} \left[ \cos(\xi\pi)\Gamma(1/2-\xi)\,y_1(a,z) -\sqrt{2}\sin(\xi\pi)\Gamma(1-\xi)\,y_2(a,z) \right] </math> :<math> V(a,z)=\frac{1}{2^\xi\sqrt{\pi}\Gamma[1/2-a]} \left[ \sin(\xi\pi)\Gamma(1/2-\xi)\,y_1(a,z) +\sqrt{2}\cos(\xi\pi)\Gamma(1-\xi)\,y_2(a,z) \right] </math> where :<math> \xi=\frac{1}{2}a+\frac{1}{4} . </math> The function ''U''(''a'', ''z'') approaches zero for large values of z  and \|arg(''z'')\| < π/2, while ''V''(''a'', ''z'') diverges for large values of positive real ''z'' . :<math> \lim_{z\rightarrow\infty}U(a,z)/e^{-z^2/4}z^{-a-1/2}=1\,\,\,\,(\text{for}\,\|\arg(z)\|<\pi/2) </math> and :<math> \lim_{z\rightarrow\infty}V(a,z)/\sqrt{\frac{2}{\pi}}e^{z^2/4}z^{a-1/2}=1\,\,\,\,(\text{for}\,\arg(z)=0) . </math> For [[half-integer]] values of ''a'', these (that is, ''U'' and ''V'') can be re-expressed in terms of [[Hermite polynomials]]; alternatively, they can also be expressed in terms of [[Bessel function]]s. The functions ''U'' and ''V'' can also be related to the functions ''D<sub>p</sub>''(''x'') (a notation dating back to Whittaker (1902)) that are themselves sometimes called parabolic cylinder functions (see Abramowitz and Stegun (1965)): :<math>U(a,x)=D_{-a-\tfrac12}(x),</math> :<math>V(a,x)=\frac{\Gamma(\tfrac12+a)}{\pi}[\sin( \pi a) D_{-a-\tfrac12}(x)+D_{-a-\tfrac12}(-x)] .</math> Function ''D<sub>a</sub>(z)'' was introduced by Whittaker and Watson as a solution of eq.~({{EquationNote\|1}}) with <math>\tilde a=-\frac14, \tilde b=0, \tilde c=a+\frac12</math> bounded at <math>+\infty</math>. It can be expressed in terms of confluent hypergeometric functions as :<math>D_a(z)=\frac{1}{\sqrt{\pi }}{2^{a/2} e^{-\frac{z^2}{4}} \left(\cos \left(\frac{\pi a}{2}\right) \Gamma \left(\frac{a+1}{2}\right) \, _1F_1\left(-\frac{a}{2};\frac{1}{2};\frac{z^2}{2}\right)+\sqrt{2} z \sin \left(\frac{\pi a}{2}\right) \Gamma \left(\frac{a}{2}+1\right) \, _1F_1\left(\frac{1}{2}-\frac{a}{2};\frac{3}{2};\frac{z^2}{2}\right)\right)}.</math> {{no footnotes\|date=December 2010}} == References == * {{AS ref \|19\|686}} {{springer\|id=W/w097310\|title=Weber equation\|first=N.Kh.\|last= Rozov}} {{dlmf\|id=12\|first=N. M. \|last=Temme}} Weber, H.F. (1869) "Ueber die Integration der partiellen Differentialgleichung <math>\partial^2u/\partial x^2+\partial^2u/\partial y^2+k^2u=0</math>". ''Math. Ann.'', 1, 1–36 Whittaker, E.T. (1902) "On the functions associated with the parabolic cylinder in harmonic analysis" ''Proc. London Math. Soc.''35, 417–427. *Whittaker, E. T. and Watson, G. N. "The Parabolic Cylinder Function." §16.5 in A Course in Modern Analysis, 4th ed. Cambridge, England: Cambridge University Press, pp. 347-348, 1990. {{DEFAULTSORT:Parabolic Cylinder Function}} [[Category:Special hypergeometric functions]]
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LaTeX to CAS translator

Mathematica

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SymPy

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Maple

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