Is the sentence okay?

Yes. No corrections needed.

J

Thank you, Joe.

The English version of the name I have heard of that great mathematician is Shing-Shen Chern

The comma isn't necessary after "net".

Well, JB, you've missed out one of "i"s there.

But thanks.

Hello gustavratzenhofer, these days a shorter clause is preferred.

Good morning, oristar. Might I say I am quite pleased with your language-learning progress.

I've been monitoring you and have been quite impressed with your results.

I also monitor Occom Bill's progress. He seems to be regressing.

Hello Gustavratzenhofer,

I am flattered. Thank you for your comment.