His use of the letter "P" led to some confusion, but he later explained tha
His use of the letter "P" led to some confusion, but he later explained that he meant it to be a portmanteau, "prolaag", in contrast to V, which stood for "increase" in his paper "Cooperating sequential processes", which introduced the semaphore framework.  He developed the shunting-yard algorithm for evaluating infix notation and originated the phrase “considered harmful” in his notorious hate for the “GOTO” statement. He created an algorithm that is the basis for the A-star algorithm and that can fail when the edge weights of its input graph are negative. For 10 points, what Dutch computer scientist formulated a namesake shortest path algorithm?