منابع مشابه
T-structures, T-functions, and texts
The theory of '-structures [see, e.g., Ehrenfeucht and Rozenberg (1990)] provides a convenient framework for investigating various mathematical structures encountered in computer science. This paper investigates a subclass of 2-structures, called T-srrucrurrs, which turned out to be important in the investigation of basic properties of 2-structures [see Ehrenfeucht and Rozenberg (1992)]. We pro...
متن کاملبررسی کاریوتیپی چهار گونه آویشن (Thymus spp) T. lancifolius) ،T. daenensis ، T. fedtschenkoi و pubescens T.)
آویشن (Thymus) از تیره Lamiaceae گیاهی است چند ساله که به‌دلیل خاصیت دارویی از اهمیت بالایی برخوردار است. بذرهای پنج جمعیت متعلق به چهار گونه T. Lancifolius،T. daenensis subsp. daenensis (دو نمونه)، T. fedtschenkoiو pubescens .Tکشت گردید و پس از جوانه‌زنی بذرها از مریستم انتهایی ریشه برای مطالعات کاریوتیپی استفاده شد. نتایج نشان داد که تعداد کروموزوم پایه در تمام جمعیت‌های مورد بررسی 15= x اس...
متن کاملImaging T-tubules: dynamic membrane structures for deep functions
Extensive intracellular contacts of the endo/sarcoplasmic reticulum (ER/ SR) with transverse tubules (TTs) are fundamental for intracellular Ca2+ cycling in cardiac muscle. For this, TTs extend from the cytoplasmic surface deep into the cell, setting up a complex three-dimensional (3D) membrane network, referred to as ‘transverse axial tubular system’ (TATS) (Figure 1A). The TATS extends over s...
متن کاملGENERALIZED t-STRUCTURES: t-STRUCTURES FOR SHEAVES OF DG-MODULES OVER A SHEAF OF DG-ALGEBRAS AND DIAGONAL t-STRUCTURES
t-structures, in the abstract, apply to any triangulated category. However, for the most part, they have been studied so far only in the context of sheaves of modules over sites provided with sheaves of rings. In this paper we define and study t-structures for categories of modules over sites provided with sheaves of dgas and E∞-dgas. A close variant, as we show, are the diagonal t-structures t...
متن کاملt-MODEL STRUCTURES
For every stable model category M with a certain extra structure, we produce an associated model structure on the pro-category pro-M and a spectral sequence, analogous to the Atiyah-Hirzebruch spectral sequence, with reasonably good convergence properties for computing in the homotopy category of pro-M. Our motivating example is the category of pro-spectra. The extra structure referred to above...
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ژورنال
عنوان ژورنال: Theoretical Computer Science
سال: 1993
ISSN: 0304-3975
DOI: 10.1016/0304-3975(93)90323-l