Abstract: The method of space-time conservation element and solution element (the CE/SEmethod, for short), developed by S.C. Chang1, is a new numerical method which differs fromthe well-established methods and has many noniraditional features. Firstly, space and time areunified and treated on the same footing, and by the introduction of conservation element andsolution element, both local and global flux conservations in space and time instead of in spaceonly are enforced. Secondly, a zigzagging marching strategy i...