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MATHEMATICA BOHEMICA, Vol. 122, No. 4, pp. 365-374 (1997)
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Disjoint and complete unions of incidence structures

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Frantisek Machala, Marek Pomp

* Frantisek Machala,* Department of Algebra and Geometry, Faculty of Science, Palacky University, Tomkova 40, Hejcin, 779 00 Olomouc, Czech Republic, e-mail: ` machala@risc.upol.cz`; * Marek Pomp* Department of Mathematics, Faculty of Science, University of Ostrava, Brafova 6, 701 03 Ostrava, Czech Republic, e-mail: ` pomp@osu.cz`

**Abstract:** Some decompositions of general incidence structures with regard to distinguished components (modular or simple) are considered and several structure theorems for them are deduced.

**Keywords:** incidence structure (context) and its special cases: complete, open, trivial, regular, simple, modular; onto homomorphisms of incidence structures; union of substructures: disjoint, complete.

**Classification (MSC2000):** 06B05, 08A35

**Full text of the article:**

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