That is the digit 0, a placeholder sign. I wonder who first used 0 as a standalone number?
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I would bet it's also the indians. They had negative numbers and I think filling in the gap would be too tempting.
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What about the use of the shell as zero in the Maya number system. Doesn’t it predate this?
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Yes, https://en.m.wikipedia.org/wiki/Maya_numerals … says 36 BCE or possibly even earlier, but India still gets credit for independent invention.
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Looks more like 906 in Devnagri script "९०६"
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Indian buddy, Indian. It's call indo-arabic because Muslim traders brought it to Europe.
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Do you have a reference handy regarding 1st use?
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I friend of mine would argue that everything started with Śūnyata, a Buddhist doctrine of "emptiness"
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