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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, ...

Understand vector addition through real physics problem examples. This video explains how vectors combine using clear diagrams and practical applications, making the concept easy to follow for ...

Piper PA-28 VH-BUN prepares to land on Mona Vale golf course. (Image: M Gawin via ATSB) The ATSB has praised the decision-making of a flight instructor who landed a plane on Mona Vale golf course last ...