added multivar calc
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3 changed files with 363 additions and 1 deletions
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@ -71,6 +71,9 @@
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\newcommand{\Oball}{\oball[r]}
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\newcommand{\Cball}{\cball[r]}
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\newcommand{\oline}[1][{x,y}]{S_{#1}}
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\renewcommand{\cline}[1][{x,y}]{\overline{S_{#1}}}
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\newcommand{\interior}[1]{\mathring{#1}}
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\newcommand{\boundary}[1]{\partial #1}
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\newcommand{\closure}[1]{\bar{#1}}
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