6 lines
344 B
Text
6 lines
344 B
Text
Product integrals are to products, as integrals are to sums.
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They have been around for more than a hundred years, they have
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not become part of the standard mathematician's toolbox,
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possibly because no-one invented the right mathematical symbol
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for them. The authors have remedied that situation by proposing
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the symbol and providing this font.
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