Geometric Models of Concentric and Spiral Areola Patterns of Centric Diatoms

ALGEBRA OF PREDICATES AND RELATED GEOMETRIC MODELS CREATION IN REGARDS OF UNIFIED STATE EXAM IN INFORMATICS (RUSSIAN EGE)

Informatics in school ◽

10.32517/2221-1993-2019-18-3-40-47 ◽

2019 ◽

pp. 40-47

Author(s):

E. A. Mironchik

Keyword(s):

Geometric Model ◽

Main Idea ◽

Formal Logic ◽

High Complexity ◽

Geometric Models ◽

Complexity Problem ◽

Logical Expression ◽

State Examination

The article discusses the method of solving the task 18 on the Unified State Examination in Informatics (Russian EGE). The main idea of the method is to write the conditions of the problem utilizing the language of formal logic, using elementary predicates. According to the laws of logic the resulting complex logical expression would be transformed into an expression, according to which a geometric model is supposed to be constructed which allows to obtain an answer. The described algorithm does allow high complexity problem to be converted into a simple one.

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Centric Diatoms (Centrophyceae) of the Lower Reaches of the Oka River (Russian Federation)

Hydrobiological Journal ◽

10.1615/hydrobj.v49.i3.40 ◽

2013 ◽

Vol 49 (3) ◽

pp. 41-57 ◽

Cited By ~ 3

Author(s):

S. I. Genkal ◽

A. G. Okhapkin

Keyword(s):

Russian Federation ◽

Centric Diatoms

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Some centric diatoms (Bacillariophyta) from Neogene deposits of the Fisher Massif (Prince Charles Mountains, East Antarctica)

Novosti sistematiki nizshikh rastenii ◽

10.31111/nsnr/2011.45.32 ◽

2011 ◽

Vol 45 ◽

pp. 32-49

Author(s):

R. M. Gogorev ◽

Z. V. Pushina

Keyword(s):

Marine Sediments ◽

East Antarctica ◽

Benthic Diatoms ◽

Detailed Data ◽

Planktonic Algae ◽

Centric Diatoms ◽

Planktonic Diatom ◽

Oceanic Species ◽

Diatom Complexes

The richest diatom complexes have revealed due to the study of glacial-marine sediments sampled in the Fisher Massif (Prince Charles Mountains, East Antarctica) during 52nd and 53rd Russian Antarctic Expeditions (Polar Marine Geol. Survey Expedition) in 2006/07 and 2007/08. Three diatom complexes are distinguished according to different palaeoecological conditions: the planktonic one is located in the basis of the outcrop, while mixed planktonic-benthic and benthic ones being located above. The planktonic diatom complexes are dominated by two oceanic species Actinocyclus ingens (up to 8%) and Denticulopsis simonseni (up to 80%). There are 15 planktonic algae, e. g. Eucampia аntarctica, Fragilariopsis spp., Rhizosolenia spp., Rouxia antarctica, Podosira antarctica sp. nov., Stellarima microtrias; and also unknown and non-described benthic diatoms Achnanthes sp., Cocconeis spp., Rhabdonema (s. l.) spp. and Synedra (s. l.) spp. Detailed data on morphology and taxonomy of 10 centric diatoms are presented, including 3 newly described species.

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Volumetric Representation and Manipulation of Geometric Models

10.21236/ada389494 ◽

2001 ◽

Author(s):

Greg Turk ◽

F. S. Nooruddin ◽

James F. O'Brien ◽

Gary Yngve

Keyword(s):

Geometric Models ◽

Volumetric Representation

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Decision with multiple alternatives: Geometric models in higher dimensions — the disk model

Journal of Mathematical Psychology ◽

10.1016/j.jmp.2020.102493 ◽

2021 ◽

Vol 100 ◽

pp. 102493

Author(s):

Keivan Mallahi-Karai ◽

Adele Diederich

Keyword(s):

Higher Dimensions ◽

Disk Model ◽

Geometric Models

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Anyon Networks from Geometric Models of Matter

The Quarterly Journal of Mathematics ◽

10.1093/qmath/haab004 ◽

2021 ◽

Author(s):

Michael Atiyah ◽

Matilde Marcolli

Keyword(s):

Normal Bundle ◽

Present Form ◽

Joint Work ◽

Geometric Models ◽

Tensor Networks

Abstract This paper, completed in its present form by the second author after the first author passed away in 2019, describes an intended continuation of the previous joint work on anyons in geometric models of matter. This part outlines a construction of anyon tensor networks based on four-dimensional orbifold geometries and braid representations associated with surface-braids defined by multisections of the orbifold normal bundle of the surface of orbifold points.

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