Abstract: Vector addition systems with states (VASS), also known as Petri nets, are a popular model of concurrent systems. Many problems from many areas reduce to the reachability problem for VASS, ...

USC defensive coordinator D'Anton Lynn has informed the school that he is leaving the program to accept the same position at Penn State for first-year coach Matt Campbell, sources told CBS Sports' ...

LSU football officially inked a deal with Sterling Lucas as the defensive line coach, announced Monday. He makes the jump from South Carolina, where he served as the defensive run game coordinator and ...

Berkshire Hathaway faces plenty of challenges as Warren Buffett steps down later this year, but higher executive turnover and a narrowing of the premium the stock has enjoyed under the “Oracle of ...

Hundreds of thousands of kids are officially being kicked off social media platforms today under Australia’s “world-first” teen social media ban. We’re officially in the post-social media era for a ...

Former Manchester United forward Mason Greenwood has been backed to play for England again on one condition as he would solve “many problems”. Greenwood has spent the last 18 months playing in Europe ...

Children who count on their fingers between ages 4 and 6 1/2 have better addition skills by age 7 than those who don’t use their fingers, suggesting that finger counting is an important stepping stone ...

Virginia has done a good job of developing players and using the transfer portal to rebuild its roster and take a big step forward this season under head coach Tony Elliot. A big part of that rebuild ...

Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about numbers. And while that may seem daunting, most kids enjoy sharpening their math ...

Breaking down 1 key addition for each team, from top rookies to veteran acquisitions. NBA.com Staff Cooper Flagg was the 2025 No. 1 draft pick for the Dallas Mavericks. Yes, we’re sneaking in two ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...