scholarly journals On the number of nowhere zero points in linear mappings

COMBINATORICA ◽  
1994 ◽  
Vol 14 (2) ◽  
pp. 149-157 ◽  
Author(s):  
R. D. Baker ◽  
J. Bonin ◽  
F. Lazebnik ◽  
E. Shustin
Keyword(s):  
Zero Points

scholarly journals Value distribution of meromorphic functions concerning rational functions and differences

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Mingliang Fang ◽  
Degui Yang ◽  
Dan Liu
Keyword(s):  
Positive Integer ◽  
Meromorphic Function ◽  
Rational Function ◽  
Finite Order ◽  
Meromorphic Functions ◽  
Rational Functions ◽  
Value Distribution ◽  
Exponent Of Convergence ◽  
Nonzero Constant ◽  
Zero Points

AbstractLet c be a nonzero constant and n a positive integer, let f be a transcendental meromorphic function of finite order, and let R be a nonconstant rational function. Under some conditions, we study the relationships between the exponent of convergence of zero points of $f-R$ f − R , its shift $f(z+nc)$ f ( z + n c ) and the differences $\Delta _{c}^{n} f$ Δ c n f .

scholarly journals Approximation of viscosity zero points of accretive operators in a Banach space

Filomat ◽  
2014 ◽  
Vol 28 (10) ◽  
pp. 2175-2184
Author(s):  
Sun Cho ◽  
Shin Kang
Keyword(s):  
Banach Space ◽  
Strong Convergence ◽  
Iterative Algorithm ◽  
Accretive Operators ◽  
Convergence Theorems ◽  
Computational Errors ◽  
Zero Points

In this paper, zero points of m-accretive operators are investigated based on a viscosity iterative algorithm with double computational errors. Strong convergence theorems for zero points of m-accretive operators are established in a Banach space.

scholarly journals POSI BOLA OF JAMI MOSQUE AS SPATIAL TRANSFORMATION SYMBOL

2019 ◽  
Vol 5 (4) ◽  
pp. 181-188
Author(s):  
Moh Sutrisno ◽  
Sudaryono Sastrosasmito ◽  
Ahmad Sarwadi
Keyword(s):  
Built Environment ◽  
Spatial Transformation ◽  
New Approach ◽  
South Sulawesi ◽  
Space Transformation ◽  
City Space ◽  
Islamic Religion ◽  
Zero Points ◽  
Horizontal Slice ◽  
Contextual Meaning

Palopo city space as the center of Tana Luwu cannot be separated from the significance of the oldest kingdom in South Sulawesi. The entry of the Islamic religion in Luwu was marked by the Jami Mosque, which is located at the zero points of Palopo city. The preservation of pre-Islamic heritage and after the entry of Islam in the present tends to not a dichotomy in two different meanings. The research is aimed to explore the semiotic meaning of the Jami Mosque, which has become an icon in Palopo City. The research used the ethnomethodology method within the framework of the semiotics paradigm to obtain contextual meaning as well as the application of a new approach in architecture semiotics study. The results show that the Jami Mosque keeps the complexity of meaning, which can be the foundation of conservation philosophy and planning of the built environment. The cosmos axis of Palopo city space and the territory of Luwu become the central point of religious civilization, especially in Islamic cosmology. The space transformation is represented by ‘posi bola’ (house pole). The symbolic ‘posi bola’ moves from the palace to the Jami mosque as the axis of Luwu space in the Islamic era. The horizontal slice of the pole has implications on the particular geometrical patterns of Luwu. The elements of structure and construction of buildings become a symbol of Islamic teachings.

Study on Gyroscopic Effect of Magnetic Flywheel Rotor

2011 ◽  
Vol 130-134 ◽  
pp. 970-975
Author(s):  
Xiang Long Wen ◽  
Cao Cao
Keyword(s):  
Feedback Control ◽  
High Speed ◽  
System Stability ◽  
Rotor Speed ◽  
Gyroscopic Effect ◽  
Pd Control ◽  
The Stability ◽  
Gyroscopic Effects ◽  
Zero Points ◽  
Flywheel Rotor

In the high-speed, gyroscopic effects of the flywheel rotor greatly influence the rotor stability. The pole-zero points move to right of s-plane and the damping terms of the pole points become smaller. The stability of the system will get worse with the increasing of rotor speed when the traditional decentralized PD controller is used only. In the paper, a cross-feedback control with decentralized PD control is used for compensating gyroscopic effect. The simulation results show that the system stability is better using the cross-feedback control with decentralized PD control than using the traditional decentralized PD control.

Recalculations between different expressions of stable HCNOS isotope results – is it easy?

2021 ◽  
Author(s):  
Grzegorz Skrzypek ◽  
Philip Dunn
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotope ◽  
Isotope Ratio ◽  
Data Sets ◽  
Atom Fraction ◽  
Working Standard ◽  
Mass Spectrometers ◽  
User Friendly ◽  
Zero Points ◽  
Selection Of

<p>The stable HCNOS isotope compositions can be reported in various ways depending on scientific domain and needs. The most common notations are 1) the isotope ratio of two stable isotopes; 2) isotope delta value, and 3) atom fraction of one or more of the isotopes. Frequently recalculations between these notations are required for certain applications, particularly when merging different data sets. All these recalculations require using the absolute isotope ratio for the zero points of the stable isotope delta scales (<em>R<sub>std</sub></em>). However, several <em>R<sub>std</sub></em> with very contrasting values have been proposed over time and there is no common agreement on which values should be used word-wide (Skrzypek and Dunn, 2020a).</p><p>Differences in the selection of <em>R<sub>std</sub></em>value may lead to significant differences between different data sets recalculated from delta value to other notations. These differences in R<sub>std</sub> have a significant influence also on the normalization of raw values but only when the normalization is conducted versus the working standard gas value. We proposed a user-friendly EasyIsoCalculator (http://easyisocalculator.gskrzypek.com) that allows recalculation between the main expressions of isotope compositions using various <em>R<sub>std</sub></em> and aids for identification of potential inconsistencies in recalculations (Skrzypek and Dunn, 2020b).</p><p> </p><p>Skrzypek G., Dunn P. 2020a. Absolute isotope ratios defining isotope scales used in isotope ratio mass spectrometers and optical isotope instruments. Rapid Communications in Mass Spectrometry 34: e8890.</p><p>Skrzypek G., Dunn P., 2020b. The recalculation of the stable isotope expressions for HCNOS – EasyIsoCalculator. Rapid Communications in Mass Spectrometry 34: e8892.</p>

scholarly journals Contributions of the USNO to the Optical Reference Frame

1997 ◽  
Vol 165 ◽  
pp. 453-462
Author(s):  
Thomas Corbin
Keyword(s):  
Reference Frame ◽  
Reverse Order ◽  
Good Working ◽  
Working Definition ◽  
Optical Reference ◽  
Definition Of ◽  
Celestial Sphere ◽  
Celestial Reference Frame ◽  
Frame Rigidity ◽  
Zero Points

A good, working definition of what is required in a celestial reference frame is that it must provide observable fiducial points on the Celestial Sphere with internally consistent positions that are referred to coordinate axes of known direction. In reality, this statement gives the goals in the reverse order from that in which each must be achieved, the definition of the axes, or zero points of the system give orientation to the observationally defined set of primary objects whose coordinate relation to each other must give the frame rigidity. Finally, the primary objects are generally too sparse to define the frame within areas of less than tens of square degrees, and so additional objects must be related to the frame to increase the density. This last step is required to make the frame useful for most observational applications.

Green's Forms and Meromorphic Functions on Compact Analytic Varieties

1951 ◽  
Vol 3 ◽  
pp. 108-128 ◽  
Author(s):  
Kunihiko Kodaira
Keyword(s):  
Meromorphic Function ◽  
Meromorphic Functions ◽  
Zero Point ◽  
Positive Definite ◽  
Analytic Surface ◽  
Analytic Variety ◽  
Complex Dimension ◽  
Analytic Varieties ◽  
Complex Analytic Variety ◽  
Zero Points

Let be a compact complex analytic variety of the complex dimension n with a positive definite Kâhlerian metric [4] ; the local analytic coordinates on will be denoted by z = (z 1 z 2, … , zn). Now, suppose a meromorphic function f(z) defined on as given. Then the poles and zero-points of f(z) constitute an analytic surface in consisting of a finite number of irreducible closed analytic surfaces Γ1, Γ2, … , Γk, each of which is a polar or a zero-point variety of f(z).

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