Ciro Santilli @cirosantilli 37

This simply connected is called the universal covering group.

E.g. in the case of $SO(3)$ and $SU(2)$, $SU(2)$ is simply connected, but $SO(3)$ is not.

Highly managed, you don't even see the Docker images, only some higher level JSON configuration file.

These setups are really convenient and cheap, and form a decent way to try out a new website with simple requirements.

This seems like a cool dude. Besides a hardcore scientist, he also made many important contributions to the French education and research system.

No chat only? .... community.jitsi.org/t/chat-function-only/79067

As of 2020: end-to-end encryption optional and turned off as default, and marked as experimental...

Appears to be based on XMPP: community.jitsi.org/t/jitsi-users-is-jitsi-a-regular-xmpp-server/13211

A pre-Jesus-like figure, likely possibly a mentor or competitor with Jesus.

He would have deserved a scene in Jesus Christ Superstar (1973).

Diffeomorphic to the 3 sphere.

A function $\mathbb{R}\to \mathbb{R}$ defined by the second of the Josephson equations plus initial conditions.

It represents an internal state of the junction.