Comment by drostie | Hacker News Reader

Comment by drostie | Hacker News Reader

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If anyone was wondering what that next number was in the sequence, the sequence for the problem given is https://oeis.org/A076912 and it is now known to begin,

    5, 2875, 609250, 317206375, 242467530000, 229305888887625, 248249742118022000, 295091050570845659250, 375632160937476603550000, 
    503840510416985243645106250, ...

If you want a few more details you might check out https://www.encyclopediaofmath.org/index.php/Clemens'_conjec... but of course mirror symmetries have whole textbooks devoted to them nowadays, one of which the Clay Mathematics institute has released to the public [PDF warning: http://www.claymath.org/library/monographs/cmim01c.pdf].

Thanks for the link. On page three this book refers to "high school vector calculus." Who studied vector calculus in high school?

This is a pretty common joke/expression among mathematicians i.e. "As you all know from kindergarten abelian groups are just monoidal groupoids with a single object" or whatever.

I understand "vector calculus" here as meaning "how to compute stuff with vectors", i.e. adding and subtracting vectors, computing the inner product etc.; not doing calculus with vectors. Obviously both interpretations are possible, but the latter is usually called multidimensional analysis.

Surely (multidimensional) analysis is the term used in mathematics for a more rigorous investigation of the basis of calculus. In physics, vector calculus is taught as a tool and the course is called vector calculus (or maybe multivariable calculus.)

The book uses "calculus" several times to mean "derivatives and integrals"

Europeans

Even African

People who grow up to attend graduate schoool in the study of mathematical methods of physics

AP courses have vector calculus.

It was the last unit in senior math at my high school.

Probably anyone who took a more than introductory physics class. Not me, though.

I did

That's numberwang!

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