Results 91 to 100 of about 600 (179)

On zero-divisor graphs of infinite posets

Soft Computing
AbstractIt is known that the so-called Beck’s conjecture, i.e. the equality of the finite clique and chromatic numbers of a zero-divisor graph, holds for partially ordered sets Halaš and Jukl (Discrete Math 309(13):4584–4589, 2009). In this paper we present a simple direct proof of this fact.
Radomír Halas, Jozef Pócs
openaire   +1 more source

Graphs from matrices - a survey

AKCE International Journal of Graphs and Combinatorics
Let R be a commutative ring with identity. For a positive integer [Formula: see text] let [Formula: see text] be the set of all n × n matrices over R and [Formula: see text] be the set of all non-zero matrices of [Formula: see text] The zero-divisor ...
T. Tamizh Chelvam
doaj   +1 more source

Attacking cryptosystems by means of virus machines. [PDF]

Sci Rep, 2023
Pérez-Jiménez MJ, Ramírez-de-Arellano A, Orellana-Martín D.   +2 more
europepmc   +1 more source

Artificial intelligence versus traditional approaches in multicomponent spectral analysis. [PDF]

Sci Rep
Fahmy NM, Obaydo RH, Lotfy HM.
europepmc   +1 more source

Simultaneous spectrophotometric eco-friendly analysis of triple-drug H.pylori regimen (Vonoprazan, Amoxicillin, Metronidazole) for quality control and in vitro dissolution testing. [PDF]

Sci Rep
Hamdy AM, Abu-Bakr RI, El-Hay SSA, Sayed RA.   +3 more
europepmc   +1 more source

Spectroscopic methods for the simultaneous determination of amlodipine besylate and Hydrochlorothiazide in their binary mixture and pharmaceutical dosage form. [PDF]

Sci Rep
Badrawy M, El-Abassy OM, Nour IM, Eissa AS.   +3 more
europepmc   +1 more source

Innovative spectrophotometric methods for the analysis of terbinafine and ketoconazole in pharmaceutical preparations with compliance to greenness and blueness metrics. [PDF]

Sci Rep
Bakr EA, Zeid AM, Shalan SM, El-Shabrawy Y, Radwan AS.   +4 more
europepmc   +1 more source

A novel approach to explore common prime divisor graphs and their degree based topological descriptor. [PDF]

PLoS One
Koam ANA, Haider A, Ahmad A, Ansari MA.
europepmc   +1 more source

تصنیف بیانات قواسم الصفر للحلقات الابدالیة ذات الدرجات 11, 12 و 13

Al-Rafidain Journal of Computer Sciences and Mathematics, 2014
Nazar H. Shuker, Husam Q. Mohammad
doaj   +1 more source

Whiteness and greenness metric tools for assessment of the spectrophotometric methods sustainability: mathematical manipulation of absorption spectra to resolve the interfering donepezil HCl and pentoxifylline in ethoniosomes. [PDF]

BMC Chem
El Wahab MMA, Saad S, El-Enany N, Sheribah ZA.   +3 more
europepmc   +1 more source