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特性

核心能力

多项式

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  • 基本算术： 除法，最大公约数……
  • 因式分解
  • 无平方分解
  • Gröbner 基
  • 部分分数分解
  • 合成

演算

Integration Documentation

解方程

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Combinatorics

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  • Permutations
  • Combinations
  • Partitions
  • Subsets
  • Permutation Groups: Polyhedral, Rubik, Symmetric, ...
  • Prufer and Gray Codes

离散数学

  • 二项式系数
  • 总和
  • 积
  • 数论： generating prime numbers, primality testing, integer factorization, Diophantine equation solving...
  • 逻辑表达式

矩阵

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  • 基本算术
  • 本征值/本征向量
  • 行列式
  • 转置
  • 求解
  • Abstract expressions

几何学

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  • points, lines, rays, segments, ellipses, circles, polygons, ...
  • 相交
  • 相切
  • 相似

绘图

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  • 坐标模式
  • 绘制几何实体
  • 二维和三维
  • 交互界面
  • 彩色
  • Matplotlib support
SymPy plot of sin(2 sin(2 sin(x))) with matplotlib
plot(sin(2*sin(2*sin(x))))
SymPy plot of x, x^2, and x^3, from x = -5 to 5
plot(x, x**2, x**3, (x, -5, 5))
SymPy parametric plot of x=cos(u), y=sin(u), from u = -5 to 5
plot_parametric(cos(u), sin(u), (u, -5, 5))
SymPy 3D surface plot of xy, from x = -5 to 5, from y = -5 to 5
plot3d(x*y, (x, -5, 5), (y, -5, 5))
SymPy 3D parametric line plot of x=cos(u), y=sin(u), z=u, from u = -5 to 5
plot3d_parametric_line(cos(u), sin(u), u, (u, -5, 5))
SymPy 3D parametric surface plot of x=cos(u+v), y=sin(u-v), z=u-v, u and v from -5 to 5
plot3d_parametric_surface(cos(u + v), sin(u - v), u - v, (u, -5, 5), (v, -5, 5))
SymPy implicit plot of x^2 + y^2 = 5
plot_implicit(Eq(x**2 + y**2, 5))
SymPy implicit plot of y > x^2
plot_implicit(y > x**2)
SymPy implicit plot of y > x (logical and) y > -x
plot_implicit(And(y > x, y > -x))
Matplotlib interactive interface of SymPy 3D parametric surface plot of x=cos(u+v), y=sin(u-v), z=u-v, u and v from -5 to 5
plot3d_parametric_surface(cos(u + v), sin(u - v), u - v, (u, -5, 5), (v, -5, 5))
SymPy Gamma plot of x=cos(t), y=sin(t)
SymPy Gamma plot

物理学

统计

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  • Random variable types:
    • 正态分布
    • 均匀分布
    • Bernoulli distributions
    • Binomial distributions
    • Hypergeometric distributions
    • More…
  • 概率
  • Expected value and variance
  • Probability density

Cryptography

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  • Shift cipher
  • Affine cipher
  • Bifid ciphers
  • Vigenere’s cipher
  • Substitution ciphers
  • Hill’s cipher
  • RSA
  • Kid RSA
  • Linear feedback shift registers
  • ElGamal encryption

Parsing

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  • Conversion from Python objects to SymPy objects
  • Optional implicit multiplication and function application parsing
  • Limited Mathematica and Maxima parsing: example on SymPy Live
  • Custom parsing transformations

打印

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  • 漂亮的打印 漂亮的ASCII/Unicode打印，LaTeX
  • 代码生成 C, Fortran, Python
  • Theano interaction
Unicode printing in a Python shell
Unicode printing
LaTeX printing in an IPython notebook
LaTeX printing