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Fungrim entry: a6e081

a+ba+b\left|a + b\right| \le \left|a\right| + \left|b\right|
This relation is known as the triangle inequality.
Assumptions:aCandbCa \in \mathbb{C} \,\mathbin{\operatorname{and}}\, b \in \mathbb{C}
TeX:
\left|a + b\right| \le \left|a\right| + \left|b\right|

a \in \mathbb{C} \,\mathbin{\operatorname{and}}\, b \in \mathbb{C}
Definitions:
Fungrim symbol Notation Short description
Absz\left|z\right| Absolute value
CCC\mathbb{C} Complex numbers
Source code for this entry:
Entry(ID("a6e081"),
    Formula(LessEqual(Abs(Add(a, b)), Add(Abs(a), Abs(b)))),
    Description("This relation is known as the triangle inequality."),
    Variables(a, b),
    Assumptions(And(Element(a, CC), Element(b, CC))))

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2019-09-15 11:00:55.020619 UTC