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Fungrim entry: 15dd69

∣Tn ⁣(x)∣≤1\left|T_{n}\!\left(x\right)\right| \le 1
Assumptions:n∈Z  and⁡  x∈[−1,1]n \in \mathbb{Z} \;\mathbin{\operatorname{and}}\; x \in \left[-1, 1\right]
TeX:
\left|T_{n}\!\left(x\right)\right| \le 1

n \in \mathbb{Z} \;\mathbin{\operatorname{and}}\; x \in \left[-1, 1\right]
Definitions:
Fungrim symbol Notation Short description
Abs∣z∣\left|z\right| Absolute value
ChebyshevTTn ⁣(x)T_{n}\!\left(x\right) Chebyshev polynomial of the first kind
ZZZ\mathbb{Z} Integers
ClosedInterval[a,b]\left[a, b\right] Closed interval
Source code for this entry:
Entry(ID("15dd69"),
    Formula(LessEqual(Abs(ChebyshevT(n, x)), 1)),
    Variables(n, x),
    Assumptions(And(Element(n, ZZ), Element(x, ClosedInterval(-1, 1)))))

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2021-03-15 19:12:00.328586 UTC