Abstract We propose an all-optical technique to record the time information of relativistic electron beams with sub-optical-cycle duration. The is based on interaction beam ponderomotive potential optical traveling wave generated by two counter-propagating circularly polarized fields at different frequencies in vacuum. One pulses a vortex laser pulse, and other normal Gaussian pulse. mapped int...

Generalizing over temporal variations is a prerequisite for effective action recognition in videos. Despite significant advances deep neural networks, it remains challenge to focus on short-term discriminative motions relation the overall performance of an action. We address this by allowing some flexibility discovering relevant spatio-temporal features. introduce Squeeze and Recursion Temporal...

We present an efficient algorithm for computing the vertex ranking number of an asteroidal triple-free graph. lts running time is bounded by a polynomial in the number of vertices and the number of minimal separators of the input graph.