###
*A* *Lemon* is not *a* *Monstar*: *visualization* of *singularities* of *symmetric* *second* *rank* *tensor* *fields* in the *plane*

"... In the visualization of the topology of second rank symmetric tensor fields in the plane one can extract some key points (degenerate points), and curves (separatrices) that characterize the qualitative behaviour of the whole tensor field. This can provide a global structure of the whole tensor field ..."

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In the

*visualization*of the topology of*second**rank**symmetric**tensor**fields*in the*plane*one can extract some key points (degenerate points), and curves (separatrices) that characterize the qualitative behaviour of the whole*tensor**field*. This can provide*a*global structure of the whole*tensor*###
*Visualizing* the Topology of *Symmetric*, *Second*-Order, Time-Varying Two-Dimensional

"... Abstract. We introduce the underlying theory behind degenerate points in 2D tensor fields to study the local flow characteristics in the vicinity of linear and nonlinear singularities. The structural stability of these features and their corresponding separatrices are also analyzed. From here, we hi ..."

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highlight the main techniques for

*visualizing*and simplifying the topology of both static and time-varying 2D*tensor**fields*. 1 Fundamental notions of two-dimensional*tensor**field*topology 1.1 Basic definitions Eigenvector*fields*. We consider*symmetric*,*second*-order two-dimensional, real*tensor**fields*###
*A* Dyson-Schwinger study of the four-gluon vertex

"... Abstract: We present a self-consistent calculation of the four-gluon vertex of Landau gauge Yang-Mills theory from a truncated Dyson-Schwinger equation. The equation contains the leading diagrams in the ultraviolet and is solved using as the only input results for lower Green functions from previous ..."

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Abstract: We present

*a*self-consistent calculation of the four-gluon vertex of Landau gauge Yang-Mills theory from*a*truncated Dyson-Schwinger equation. The equation contains the leading diagrams in the ultraviolet and is solved using as the only input results for lower Green functions from### ALGEBRAIC ALGORITHMS1

, 2012

"... This is a preliminary version of a Chapter on Algebraic Algorithms in the up- ..."

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This is

*a*preliminary version of*a*Chapter on Algebraic Algorithms in the up-### Volume I: Computer Science and Software Engineering

, 2013

"... Algebraic algorithms deal with numbers, vectors, matrices, polynomials, for-mal power series, exponential and differential polynomials, rational functions, algebraic sets, curves and surfaces. In this vast area, manipulation with matri-ces and polynomials is fundamental for modern computations in Sc ..."

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Algebraic algorithms deal with numbers, vectors, matrices, polynomials, for-mal power series, exponential and differential polynomials, rational functions, algebraic sets, curves and surfaces. In this vast area, manipulation with matri-ces and polynomials is fundamental for modern computations in Sciences and

### EXPERIMENTS IN TURBULENT SOAP-FILM FLOWS: MARANGONI SHOCKS, FRICTIONAL DRAG, AND ENERGY SPECTRA BY

"... We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-film flows over smooth walls. These flows are effectively two-dimensional, and we are able to create soap-film flows with the two types of turbulent spectrum that are theoretically possible in two dimension ..."

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/2; where α = 5/3, f ∝ Re−1/4. These findings cannot be reconciled with the classic theory of the frictional drag. The classic theory provides no means of distinguishing between one type of turbulent spectrum and another, and cannot account for the existence of

*a*“spectral link ” between the frictional drag### Nuclear Physics B Proceedings Supplement – preprint (2014) 1–42 Nuclear Physics B Proceedings Supplement Universal Aspects of QCD-like TheoriesI

"... In these lectures I review some basic examples of how the concepts of universality and scaling can be used to study aspects of the chiral and the deconfinement transition, if not in QCD directly but in QCD-like theories. As an example for flavor dynamics I discuss a quark-hadron model to describe th ..."

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In these lectures I review some basic examples of how the concepts of universality and scaling can be used to study aspects of the chiral and the deconfinement transition, if not in QCD directly but in QCD-like theories. As an example for flavor dynamics I discuss

*a*quark-hadron model to describe