Abstract
Let X be a partially ordered set, R is a commutative ring with identity and FININC (X, R) denote finitary incidencealgebra of poset X over R. In this paper it will be seen congruence of two elements that are idempotent orthogonalin FININC (X, R) relative to the modulo Radical Jacobson of algebra. Review of this topic would be useful to examineisomorphism problems of the finitary incidence Algebra.
Highlights
PENDAHULUAN Munculnya tulisan ini termotivasi oleh penemuan Kripchenko dan Novikov, (2009), tentang aljabar insidensi finitary atas suatu struktur lapangan yang bekerja pada sembarang partially ordered set
R is a commutative ring with identity and FININC
Incidence Algebra of Simplicial Compexes. http://arxiv.org/PS_cache/math/pdf/0001/0001065v1.pdf (1 September 2010)
Summary
1)Jurusan Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km. Jatinangor, Sumedang 45363. 1)Jurusan Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km.. 2)Jurusan Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Jalan Sekip Utara Bulak Sumur 21, Yogyakarta 55281. 3)Jurusan Matematika, Fakultas Matematika Ilmu dan Pengetahuan Alam, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132
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