本文整理汇总了Python中sympy.assumptions.Q.positive_definite方法的典型用法代码示例。如果您正苦于以下问题：Python Q.positive_definite方法的具体用法？Python Q.positive_definite怎么用？Python Q.positive_definite使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sympy.assumptions.Q的用法示例。
在下文中一共展示了Q.positive_definite方法的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: MatMul
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def MatMul(expr, assumptions):
factor, mmul = expr.as_coeff_mmul()
if (all(ask(Q.positive_definite(arg), assumptions)
for arg in mmul.args) and factor > 0):
return True
if len(mmul.args) >= 2 and mmul.args[0] == mmul.args[-1].T:
return ask(Q.positive_definite(
MatMul(*mmul.args[1:-1])), assumptions)示例2: MatrixSlice
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def MatrixSlice(expr, assumptions):
if not expr.on_diag:
return None
else:
return ask(Q.positive_definite(expr.parent), assumptions)示例3: Transpose
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def Transpose(expr, assumptions):
return ask(Q.positive_definite(expr.arg), assumptions)示例4: MatrixSymbol
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def MatrixSymbol(expr, assumptions):
if not expr.is_square:
return False
if Q.positive_definite(expr) in conjuncts(assumptions):
return True示例5: MatAdd
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def MatAdd(expr, assumptions):
if all(ask(Q.positive_definite(arg), assumptions)
for arg in expr.args):
return True示例6: MatrixElement
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def MatrixElement(expr, assumptions):
if (expr.i == expr.j
and ask(Q.positive_definite(expr.parent), assumptions)):
return True示例7: Determinant
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def Determinant(expr, assumptions):
if ask(Q.positive_definite(expr.arg), assumptions):
return True示例8: Trace
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def Trace(expr, assumptions):
if ask(Q.positive_definite(expr.arg), assumptions):
return True示例9: MatPow
# 需要导入模块: from sympy.assumptions import Q [as 别名]
# 或者: from sympy.assumptions.Q import positive_definite [as 别名]
def MatPow(expr, assumptions):
# a power of a positive definite matrix is positive definite
if ask(Q.positive_definite(expr.args[0]), assumptions):
return True