http://pi.physik.uni-bonn.de/~dieckman/InfProd/InfProd.html#InfinitexProducts for a hint
Sum of diagonal of a square matrix
Calories in a slice of pizza?
Mr. Pyramidad & Ms. Whissy Bolower
Check if any duplicates in your data
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office