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# Symbol doubt

Sir,

In the Picture.,

• Whats the meaning of that symbol (in the red box).?

• What is the name of that symbol?

• Explanation about the working way of that symbol?

• Any websites(if any) suggest for more Detailed Information about that symbol?

Note by Vamsi Krishna Appili
4 years, 1 month ago

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A simple example: for all positive integers $$k$$, $k!=1\cdot 2\cdot 3\cdot \ldots\cdot (k-1)\cdot k = \prod_{i=1}^k i.$ · 4 years, 1 month ago

As $$\sum$$ means addition, $$\prod$$ means product. · 4 years, 1 month ago

Product symbol · 4 years, 1 month ago

we call it pie...it stands for continous product.... · 4 years, 1 month ago

ρ whatis standing for ut? · 4 years, 1 month ago

pardon??? · 4 years, 1 month ago

I think means what does $$\rho$$ stand for. · 4 years, 1 month ago