Definitions by 🥌

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It's a uppercase 'π' (pi), it can be use in math like '∑' but for product.
∑(n) with (n=0 -> 5) = 0 + 1 + 2 + 3 + 4 + 5 = 15
∏(n) with (n=0 -> 5) = 0 * 1 * 2 * 3 * 4 * 5 = 0

It also makes for some nice doors.

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"- Did you know that ∑(n) with n=0 –> ∞ is equal to -1/12 ?"
"- Yeah, and ∏(n) with n=1 -> 42 is equal to 1405006117752879898543142606244511569936384000000000"

∏ by 🥌 April 5, 2019