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Real quadratic number fields with metacyclic Hilbert $2$-class field tower [PDF]

open access: yesMathematica Bohemica, 2019
We begin by giving a criterion for a number field $K$ with 2-class group of rank 2 to have a metacyclic Hilbert 2-class field tower, and then we will determine all real quadratic number fields $\mathbb Q(\sqrt d)$ that have a metacyclic nonabelian ...
Said Essahel, Ahmed Dakkak, Ali Mouhib
doaj   +3 more sources

The Lockdown Diaries of the Working Class

open access: yes, 2022
Collated by the Working Class Collective, The Lockdown Diaries of the Working Class is a beautiful, self-published, illustrated book featuring the diaries of working class people from across the UK and their experiences of life during the first COVID19 ...
The Working Class Collective
core   +4 more sources

On Hilbert class field tower for some quartic number fields [PDF]

open access: yesArab Journal of Mathematical Sciences, 2021
We determine the Hilbert 2-class field tower for some quartic number fields k whose 2-class group Ck,2 is isomorphic to ℤ/2ℤ×ℤ/2ℤ.
Abdelmalek Azizi   +2 more
doaj   +1 more source

Some Remarks on the Divisibility of the Class Numbers of Imaginary Quadratic Fields

open access: yesMathematics, 2022
For a given integer n, we provide some families of imaginary quadratic number fields of the form Q(4q2−pn), whose ideal class group has a subgroup isomorphic to Z/nZ.
Kwang-Seob Kim
doaj   +1 more source

Latent Class Cluster Analysis: Selecting the number of clusters

open access: yesMethodsX, 2022
Latent Class Cluster Analysis (LCCA) is an advanced model-based clustering method, which is increasingly used in social, psychological, and educational research.
Olga Lezhnina, Gábor Kismihók
doaj   +1 more source

On the class of fuzzy number sequences [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2019
We introduce the notion of p-bounded variation of fuzzy real number sequences, bvFp, for 1 ...
Binod Chandra Tripathy   +1 more
doaj   +1 more source

The Class Number of the Cyclotomic Field [PDF]

open access: yesProceedings of the National Academy of Sciences, 1949
Let g denote an odd prime, and h = h(g) the class number of the cyclotomic field R(), where is a primitive gth root of unity. It is known that we can write
Ankeny, Nesmith C., Chowla, Sarvadaman
openaire   +3 more sources

On the number of isomorphism classes of transversals [PDF]

open access: yesProceedings - Mathematical Sciences, 2013
In this paper we prove that there does not exist a subgroup $H$ of a finite group $G$ such that the number of isomorphism classes of normalized right transversals of $H$ in $G$ is four.
Kakkar, Vipul, Shukla, R. P.
openaire   +3 more sources

Estimating tidal Love number of a class of compact stars

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Tidal deformability of a star in the presence of an external tidal field provides an important avenue to our understanding about the structure and properties of neutron stars.
Shyam Das   +2 more
doaj   +1 more source

On the Number of Conjugate Classes of Derangements [PDF]

open access: yesJournal of Mathematics, 2021
The number of conjugate classes of derangements of order n is the same as the number h n
Wen-Wei Li   +2 more
openaire   +4 more sources

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