opolt Jun 23, 2011:

This is ... ... most probably (no pun intended) related to probability theory, which would fit your context, it appears to me. Maybe it's about what they call the "kth moment":
http://en.wikipedia.org/wiki/Central_moment
http://de.wikipedia.org/wiki/Moment_(Stochastik)
http://www.mathepedia.de/Momente.aspx
http://books.google.com/books?id=X4L2OFo1AsgC&pg=PA958&lpg=P...

Just to give you a lead -- this topic is not my cup of tea at all :-]

PS The above is partially true at best. As far as I can see, generally in mathematics, "k" denotes the number of elements forming a subset of a total of "n" elements -- whichever the actual calculation performed. So I guess it should be "kth".

Michele Gile (asker) Jun 23, 2011:

Counting passengers we are counting passenger moving from area to area of the city (train grid).
Ein- und Aussteiger an der k-ten Übergangstür zwischen dem Zuordnungspunkt [formula] und der Ankunft am Folgehalt zwischen Abfahrt am Halt "i" und Ankunft am Folgehalt [formula]

Einsteiger Außentür
Aussteiger Außentür
Einsteiger Übergangstür vorn
Aussteiger Übergangstür vorn

opolt Jun 23, 2011:

Hello Michele, could you post the entire sentence? What exactly do they say is happening with these passengers? Please provide some more context.