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On the Riesz space properties of the space of real statistically convergent sequences

100%

Sencimen T. T. , Pehlivan S.

tom Vol. 19, nr 1

31--39

In this paper, we investigate some Riesz space (vector lattice) properties of the space of real statistically convergent sequences. We prove that this space is an order dense Riesz subspace of the linear space of all real sequences, but it is not an ideal.

Pollen morphology of some Centaurea L., Psephellus Cass. and Cyanus Miller taxa

80%

Ozler H. , Kaya Z. , Pehlivan S.

2009

tom 51

nr 2

53-66

The pollen morphology of 29 taxa, 24 of which are endemic to Turkey, was investigated in detail by light and scanning electron microscopy. LM examination showed pollen grains to be tricolporate, rarely tetracolporate, isopolar, radially symmetrical, subprolate, spheroidal-subprolate, operculate, tectum perforate, scabrate and microechinate. P. pecho Albow. and P. appendicigera C. Koch resemble the Montana type, C. pichleri subsp. pichleri Boiss. and C. pichleri subsp. extrarosularis (Hayek & Siehe) Wagenitz resemble the Cyanus type, and C. pseudoscabiosa subsp. pseudoscabiosa Boiss.& Buhse are consistent with the Dealbata type, C. pestalozzae Boiss. and C. carduiformis subsp. carduiformis DC. with the Scabiosa type, and the other taxa with Wagenitz's Jacea type