Results 41 to 50 of about 1,291,137 (334)

On the Tutte-Krushkal-Renardy polynomial for cell complexes [PDF]

open access: yes, 2013
Recently V. Krushkal and D. Renardy generalized the Tutte polynomial from graphs to cell complexes. We show that evaluating this polynomial at the origin gives the number of cellular spanning trees in the sense of A. Duval, C. Klivans, and J.
Abstract Recently V. Krushkal   +4 more
core   +1 more source

Polynomial functors and polynomial monads

open access: yes, 2009
We study polynomial functors over locally cartesian closed categories. After setting up the basic theory, we show how polynomial functors assemble into a double category, in fact a framed bicategory.
Gambino, Nicola, Kock, Joachim
core   +2 more sources

Polynomial invariants are polynomial

open access: yesMathematical Research Letters, 1995
AMSLaTeX+epic.sty+eepic.sty, 7 ...
openaire   +3 more sources

Comparison and Analysis of Geometric Correction Models of Spaceborne SAR

open access: yesSensors, 2016
Following the development of synthetic aperture radar (SAR), SAR images have become increasingly common. Many researchers have conducted large studies on geolocation models, but little work has been conducted on the available models for the geometric ...
Weihao Jiang   +3 more
doaj   +1 more source

Medical Image Denoising Based on Biquadratic Polynomial With Minimum Error Constraints and Low-Rank Approximation

open access: yesIEEE Access, 2020
To improve the visual quality of noisy medical images acquired by low radiation dose imaging, medical image denoising is highly desirable for clinical disease diagnosis.
Linlin Ji, Qiang Guo, Mingli Zhang
doaj   +1 more source

Lightweight noncommutative key exchange protocol for IoT environments

open access: yesFrontiers in Environmental Science, 2022
Network communications are expanding rapidly in many fields, including telecommunications, the Internet of Things, space, consumer electronics, and the military, with different privacy and security issues at stake in each of these areas.
Shamsa Kanwal   +5 more
doaj   +1 more source

Safety Margin Prediction Algorithms Based on Linear Regression Analysis Estimates

open access: yesMathematics, 2022
In this paper, we consider the problem of approximating the safety margin of a single instance of a technical system based on inaccurate observations at specified time points.
Gurami Tsitsiashvili, Alexandr Losev
doaj   +1 more source

On Polynomials Which Commute with a Given Polynomial [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
By extending a theorem of Jacobsthal, the following result is obtained: if g is a nonlinear polynomial, there is an integer J ( g ) ≧ 1 J(g) \geqq 1 such that for each m > 0 m > 0 there are either J ( g )
openaire   +1 more source

A Novel Real-Time Processing Wideband Waveform Generator of Airborne Synthetic Aperture Radar

open access: yesRemote Sensing
This paper investigates a real-time process generator of wideband signals, which calculates waveforms in a field-programmable gate array (FPGA) using the high-level synthesis (HLS) method.
Dongxu Chen   +6 more
doaj   +1 more source

Diffusion‐based size determination of solute particles: a method adapted for postsynaptic proteins

open access: yesFEBS Open Bio, EarlyView.
We present a diffusion‐based approach for measuring the size of macromolecules and their complexes, and demonstrate its use on postsynaptic proteins. The method requires fluorescein‐labelled protein samples, a microfluidic device that maintains laminar flow for said samples, a microscope recording the emitted fluorescent signals, and an analytic ...
András László Szabó   +7 more
wiley   +1 more source

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