I'd have to check but I seem to remember that Perelman is mostly a misanthropist so calling him based is a bit meh. He's definitely a very interesting mathematician and deserves great respect for his work though.
And as you mention Grothendieck (and since I'm studying in the university he did most of his research in lol) he's indeed an anarchist but still, way more of a misanthropist than anything (seems to be a common factor about maths geniuses). Though compared to Perelman he had way more of what we could call a political expression.
I'd have to check but I seem to remember that Perelman is mostly a misanthropist so calling him based is a bit meh. He's definitely a very interesting mathematician and deserves great respect for his work though.
And as you mention Grothendieck (and since I'm studying in the university he did most of his research in lol) he's indeed an anarchist but still, way more of a misanthropist than anything (seems to be a common factor about maths geniuses). Though compared to Perelman he had way more of what we could call a political expression.