Відео

I was asked during this talk whether the downset topology is always compatible with the lattice operations on a discrete lattice. I answered somewhat positively during the talk, but then I thought I remembered reading that this natural choice of a topology doesn't always work. I checked the smallest nontrivial example in this livestream ( ua-cam.com/video/pVoFfZAyXzk/v-deo.html ). I now realize that it's not hard to show from the definition that the operations for any lattice are continuous with respect to the downset topology, even for infinite lattices.

Prove there are n integers t st Q(t)=t

Wow i just saw imo 2006 nd found you here you've grown

zeb.. coz its cool

math all day

he loves to do math all day, based chad zarathustra

Zeb Brady IMO 2006 gold medal USA team

Thanks for the invitation to speak in PALS and thanks also for posting this, Keith.