We determine the upper central series of the maximal normal p–subgroup of the automorphism group of a bounded abelian p–group.

Introdouction: The aim of this study was to compare the ratios of the mesiodistal width of the upper and lower central incisors between natural teeth and those produced artificially by Ideal Makoo, Ivoclar, and Vitapan, in Iran. Materials and methods: The mesiodistal width of the upper and lower central incisors was measured in 120 students, using calipers placed at the height of contour...

introdouction: the aim of this study was to compare the ratios of the mesiodistal width of the upper and lower central incisors between natural teeth and those produced artificially by ideal makoo, ivoclar, and vitapan, in iran. materials and methods: the mesiodistal width of the upper and lower central incisors was measured in 120 students, using calipers placed at the height of contour of the...

The Qom Formation, a series of shales, sandstones and carbonate deposits, is the last transgression of the sea in Central Iran sedimentary basin. Foraminifera are one of the most important and numerous fossil groups present in the Qom Formation. In this study, the micropaleontology of the Qom Formation in three measured stratigraphic sections in south and west of Tafresh (Rakin, Band-e-Ali Nagh...

the qom formation, a series of shales, sandstones and carbonate deposits, is the last transgression of the sea in central iran sedimentary basin. foraminifera are one of the most important and numerous fossil groups present in the qom formation. in this study, the micropaleontology of the qom formation in three measured stratigraphic sections in south and west of tafresh (rakin, band-e-ali nagh...

The terms of the upper and lower central series of a nilpotent computable group have computably enumerable Turing degree. We show that the Turing degrees of these terms are independent even when restricted to groups which admit computable orders.