منابع مشابه
Several Remarks on Mining Frequent Trajectories in Graphs
We apply techniques that originate in the analysis of market basket data sets to the study of frequent trajectories in graphs. Trajectories are defined as simple paths through a directed graph, and we put forth some definitions and observations about the calculation of supports of paths in this context. A simple algorithm for calculating path supports is introduced and analyzed, but we explore ...
متن کاملTwo Remarks on Induction Motors
This paper addresses two points: first, induction motors are shown to be flat, which implies they can be easily controlled by full-state feedback (for instance with a linearizing (dynamic) feedback); second, an exponential observer, relying on easily measurable variables (stator current and rotor velocity) is proposed.
متن کاملTwo Remarks on Blackwell’s Theorem
In a decision problem with uncertainty a decision maker receives partial information about the actual state via an information structure. After receiving a signal he is allowed to withdraw and get 0. We say that one structure is better than another when a withdrawal option exists, if it may never happen that the latter guarantees a positive profit while the former guarantees only 0. We characte...
متن کاملTwo remarks on differential fields
We make two observations concerning differential fields. The first is a model-theoretic proof of the existence and uniqueness of a PicardVessiot extension for an iterative linear differential equation (in positive characteristic) answering a question of Hrushovski. The second observation is that definable sets of finite Morley rank in differentially closed fields of characteristic zero are (pos...
متن کاملTwo Remarks on Skew Tableaux
This paper contains two results on the number fσ/τ of standard skew Young tableaux of shape σ/τ . The first concerns generating functions for certain classes of “periodic” shapes related to work of Gessel-Viennot and Baryshnikov-Romik. The second result gives an evaluation of the skew Schur function sλ/μ(x) at x = (1, 1/22k , 1/32k , . . . ) for k = 1, 2, 3 in terms of fσ/τ for a certain skew s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Mathematical Analysis and Applications
سال: 2013
ISSN: 0022-247X
DOI: 10.1016/j.jmaa.2013.06.034