منابع مشابه
The Symplectic Penrose Kite
The purpose of this article is to view the Penrose kite from the perspective of symplectic geometry. Mathematics Subject Classification 2000. Primary: 53D20 Secondary: 52C23 Introduction The kite in a Penrose aperiodic tiling by kite and darts [8, 9] is an example of a simple convex polytope. By the Atiyah, Guillemin–Sternberg convexity theorem [1, 6], convex polytopes that are rational can be ...
متن کاملThe kick with the kite: an analysis of kite surfing related off shore rescue missions in Cape Town, South Africa.
BACKGROUND This study analyses kite surfing related off shore rescue missions in Cape Town, South Africa with the aim of providing more information on the frequency, pattern, and severity of kite surfing related injuries. METHODS The observation period for this study started on October 1, 2003 and ended on May 1, 2004 and included 30 air rescue missions. Data and information were collected pr...
متن کاملOctagon kite systems
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Abstract The spectrum of octagon kite system (OKS) which is nesting strongly balanced 4-kite-designs is determined.
متن کاملHinged Kite Mirror Dissection
Any two polygons of equal area can be partitioned into congruent sets of polygonal pieces, and in many cases one can connect the pieces by flexible hinges while still allowing the connected set to form both polygons. However it is open whether such a hinged dissection always exists. We solve a special case of this problem, by showing that any asymmetric polygon always has a hinged dissection to...
متن کاملKite-designs intersecting in pairwise disjoint blocks
A kite-design of order n is a decomposition of the complete graph Kn into kites. Such systems exist precisely when n ≡ 0, 1 (mod 8). Two kite systems (X,K1) and (X,K2) are said to intersect in m pairwise disjoint blocks if |K1∩K2| = m and all blocks in K1∩K2 are pairwise disjoint. In this paper we determine all the possible values of m such that there are two kite-designs of order n intersectin...
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ژورنال
عنوان ژورنال: Monthly Weather Review
سال: 1917
ISSN: 0027-0644,1520-0493
DOI: 10.1175/1520-0493(1917)45<269:psilwk>2.0.co;2