Earth’s rotation is speeding up. This summer, our planet will spin faster than usual, creating the shortest day since records ...

Trust relation in this work refers to permission that is given to a user at source-host to access another user at target-host through an authentication key with a unique fingerprint. We form a ...

With the continuous progress of wireless communication network technology, more and more users have formed a strong dependence on it, and also put forward higher requirements for the quality of ...

Once I was interested in the McGee graph, nicely animated here by Mamouka Jibladze: This is the unique (3,7)-cage, meaning a graph such that each vertex has 3 neighbors and the shortest cycle has ...