| This paper presents a linear algorithm for recovering 3D aane shape and motion from line correspondences with uncalibrated aane cameras. The algorithm requires a minimum of seven line correspondences over three views. The key idea is the introduction of a one-dimensional projec-tive camera. This converts 3D aane reconstruction of \line directions" into 2D projective reconstruction of \points"...

Matroid union and matroid intersection are closely related in the sense that one can be derived from the other. However they are from different perspectives and have different applications. To motivate matroid union theorem we state a well known theorem of Tutte and Nash-Williams on packing disjoint spanning trees in graphs. Theorem 1 (Nash-Williams and Tutte) An undirected multi-graph G = (V, ...

The progress of the discussion about the 'indicators of humanhood' is reviewed, along with several associated problems. It is argued that a more serious problem is posed by social attitudes about mental handicap. The author concludes that an uncritical use of criteria of humanhood may simply reinforce a morally unjustifiable social attitude.