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Fungrim entry: ebfcd8

spec(1110)={φ,1φ}\operatorname{spec}\begin{pmatrix} 1 & 1 \\ 1 & 0 \end{pmatrix} = \left\{\varphi, 1 - \varphi\right\}
TeX:
\operatorname{spec}\begin{pmatrix} 1 & 1 \\ 1 & 0 \end{pmatrix} = \left\{\varphi, 1 - \varphi\right\}
Definitions:
Fungrim symbol Notation Short description
Matrix2x2(abcd)\begin{pmatrix} a & b \\ c & d \end{pmatrix} Two by two matrix
GoldenRatioφ\varphi The golden ratio (1.618...)
Source code for this entry:
Entry(ID("ebfcd8"),
    Formula(Equal(Spectrum(Matrix2x2(1, 1, 1, 0)), Set(GoldenRatio, Sub(1, GoldenRatio)))))

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2021-03-15 19:12:00.328586 UTC