In this study, a spectrum Λ\documentclass[12pt]{minimal}
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\begin{document}$$\Lambda $$\end{document} for the integral Sierpinski measures μM,D\documentclass[12pt]{minimal}
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\begin{document}$$\mu _{M, D}$$\end{document} with the digit set D=00,10,01\documentclass[12pt]{minimal}
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\begin{document}$$ D= \left\{ \begin{pmatrix} 0\\ 0 \end{pmatrix}, \begin{pmatrix} 1\\ 0 \end{pmatrix}, \begin{pmatrix} 0 \\ 1 \end{pmatrix}\right\} $$\end{document} is derived for a 2×2\documentclass[12pt]{minimal}
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\begin{document}$$2 \times 2$$\end{document} diagonal matrix M with entries as 3ℓ1\documentclass[12pt]{minimal}
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\begin{document}$$3\ell _1$$\end{document} and 3ℓ4\documentclass[12pt]{minimal}
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\begin{document}$$3\ell _4$$\end{document} and for off-diagonal matrix M with both the off-diagonal entries as 3ℓ\documentclass[12pt]{minimal}
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\begin{document}$$3\ell $$\end{document} where, ℓ,ℓ1,ℓ4∈Z\{0}\documentclass[12pt]{minimal}
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\begin{document}$$\ell ,\ell _1,\ell _4 \in {\mathbb {Z}}{\setminus }{\{0\}}$$\end{document}. Additionally, the spectrum of μM,D\documentclass[12pt]{minimal}
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\begin{document}$$\mu _{M, D}$$\end{document} for a given M and a generalized digit set D is also examined. The spectrum of self-affine measures μM,D\documentclass[12pt]{minimal}
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\begin{document}$$\mu _{M, D}$$\end{document} on spatial Sierpinski gasket is obtained when M is diagonal matrix with entries ℓi∈2Z\{0}\documentclass[12pt]{minimal}
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\begin{document}$$\ell _i \in 2{\mathbb {Z}}\setminus {\{0\}}$$\end{document}, sign of ℓi\documentclass[12pt]{minimal}
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\begin{document}$$\ell _i$$\end{document}’s are same and D={0,e1,e2,e3}\documentclass[12pt]{minimal}
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\begin{document}$$D=\{0, e_1, e_2, e_3\}$$\end{document}, where ei′s\documentclass[12pt]{minimal}
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\begin{document}$$e_i's $$\end{document} are the standard basis in R3\documentclass[12pt]{minimal}
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\begin{document}$${\mathbb {R}}^3$$\end{document}. Further, the spectrum of μM,D\documentclass[12pt]{minimal}
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\begin{document}$$\mu _{M, D}$$\end{document} for some off-diagonal 3×3\documentclass[12pt]{minimal}
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\begin{document}$$3\times 3$$\end{document} matrices is also found.