Parastrophic planar ternary rings
β Scribed by George E Martin
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 527 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0021-8693
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π SIMILAR VOLUMES
In this paper we are dealing with coordinatization of a given affine plane d by a PTR1). Such coordinatizations were first investigated in [4]. In [5] and [6] the necessary and sufficient conditions that a PTRZ coordinatizes a translation plane, a Desarguesian plane and a Pappian plane were deduced.
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In this paper, we illustrate a bijective proof of the enumerative formula regarding non-separable rooted planar maps NS, by means of a class L of certain ternary trees (called left trees). Our ΓΏrst step consists in determining the left trees' combinatorial enumeration according to the number of thei