circle with dot in middle math?

Can You Draw a circle with a dot in the middle without lifting your pen? || Puzzle || StudyUp Maths

⊙ Hadamard Product This circle-dot symbol can mean a few different things, depending on context. Typically in machine learning literature, it refers to the Hadamard product (component-wise multiplication for matrices).

MIND BOGGLING Circle Dot Pen Trick !!!

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