Annals of Functional Analysis

Top Research Topics at Annals of Functional Analysis?

The journal is organized to address concerns in the fields of Pure mathematics, Combinatorics, Mathematical analysis, Discrete mathematics and Hilbert space. Annals of Functional Analysis emphasizes research on Pure mathematics, which includes concerns such as Banach space. Bounded operator is a focus of the presented Banach space works and it dives deep in Bounded operator.

Most of the Combinatorics studies addressed also intersect with Spectrum (functional analysis).

• Pure mathematics (47.05%)
• Combinatorics (22.92%)
• Mathematical analysis (19.27%)

What are the most cited papers published in the journal?

• On Minkowski and Hermite-Hadamard integral inequalities via fractional integration (158 citations)
• Coupled fixed point, $F$-invariant set and fixed point of $N$-order (100 citations)
• APPLICATIONS OF FIXED POINT THEOREMS TO THE HYERS{ULAM STABILITY OF FUNCTIONAL EQUATIONS { A SURVEY (84 citations)

Research areas of the most cited articles at Annals of Functional Analysis:

The most cited publications aim to foster the development of research in Pure mathematics, Mathematical analysis, Hilbert space, Discrete mathematics and Algebra. Orthogonality and Convex function are some topics wherein Pure mathematics research discussed in the most cited articles has an impact. The journal publications focus on Hilbert space but sometimes tackle the closely related topic of Bounded function which is concerned with Combinatorics, Radius and Semi-inner-product.

What topics the last edition of the journal is best known for?

• Mathematical analysis
• Hilbert space
• Algebra

The previous edition focused in particular on these issues:

The aim of Annals of Functional Analysis is to expand the discussion of research in Pure mathematics, Combinatorics, Banach space, Bounded function and Hilbert space. Characterization (mathematics) is a major topic of Pure mathematics research. The Unimodular matrix studies presented in the journal fall under the field of Combinatorics, but it also has connections to other fields such as Exponent.

The research on Banach space featured in it combines topics in other fields like Class (set theory), Uniform norm and Linear map. Topics in Bounded function were tackled in line with various other fields like Hausdorff space and Compact space. The studies on Hilbert space discussed can also contribute to research in the domains of Norm (mathematics), Radius and Tuple.

The most cited articles from the last journal are:

• Bounds for zeros of a polynomial using numerical radius of Hilbert space operators (9 citations)
• Existence of mild solutions to Hilfer fractional evolution equations in Banach space (6 citations)
• On a new norm on $$\mathcal {B}({\mathcal {H}})$$ B ( H ) and its applications to numerical radius inequalities (2 citations)

Papers citation over time

A key indicator for each journal is its effectiveness in reaching other researchers with the papers published at that venue.

The chart below presents the interquartile range (first quartile 25%, median 50% and third quartile 75%) of the number of citations of articles over time.

Top authors and change over time

The top authors publishing in Annals of Functional Analysis (based on the number of publications) are:

• Debmalya Sain (5 papers) published 3 papers at the last edition, 2 more than at the previous edition,
• Ryotaro Tanaka (4 papers) absent at the last edition,
• Mohammad Sal Moslehian (4 papers) absent at the last edition,
• Josip Pečarić (4 papers) absent at the last edition,
• Masatoshi Fujii (4 papers) absent at the last edition.

The overall trend for top authors publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top authors.

Top affiliations and change over time

Only papers with recognized affiliations are considered

The top affiliations publishing in Annals of Functional Analysis (based on the number of publications) are:

• Jadavpur University (4 papers) published 4 papers at the last edition,
• Indian Institute of Science (4 papers) published 3 papers at the last edition, 2 more than at the previous edition,
• Shaanxi Normal University (4 papers) absent at the last edition,
• Shanghai Institute of Technology (3 papers) absent at the last edition,
• Fudan University (3 papers) published 1 paper at the last edition, 1 less than at the previous edition.

The overall trend for top affiliations publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top affiliations.

Publication chance based on affiliation

The publication chance index shows the ratio of articles published by the best research institutions in the journal edition to all articles published within that journal. The best research institutions were selected based on the largest number of articles published during all editions of the journal.

The chart below presents the percentage ratio of articles from top institutions (based on their ranking of total papers).Top affiliations were grouped by their rank into the following tiers: top 1-10, top 11-20, top 21-50, and top 51+. Only articles with a recognized affiliation are considered.

During the most recent 2021 edition, 8.47% of publications had an unrecognized affiliation. Out of the publications with recognized affiliations, 18.52% were posted by at least one author from the top 10 institutions publishing in the journal. Another 16.67% included authors affiliated with research institutions from the top 11-20 affiliations. Institutions from the 21-50 range included 22.22% of all publications and 42.59% were from other institutions.

Returning Authors Index

A very common phenomenon observed among researchers publishing scientific articles is the intentional selection of journals they have already attended in the past. In particular, it is worth analyzing the case when the authors participate in the same journal from year to year.

The Returning Authors Index presented below illustrates the ratio of authors who participated in both a given as well as the previous edition of the journal in relation to all participants in a given year.

Returning Institution Index

The graph below shows the Returning Institution Index, illustrating the ratio of institutions that participated in both a given and the previous edition of the conference in relation to all affiliations present in a given year.

The experience to innovation index

Our experience to innovation index was created to show a cross-section of the experience level of authors publishing in a journal. The index includes the authors publishing at the last edition of a journal, grouped by total number of publications throughout their academic career (P) and the total number of citations of these publications ever received (C).

The group intervals were selected empirically to best show the diversity of the authors' experiences, their labels were selected as a convenience, not as judgment. The authors were divided into the following groups:

• Novice - P < 5 or C < 25 (the number of publications less than 5 or the number of citations less than 25),
• Competent - P < 10 or C < 100 (the number of publications less than 10 or the number of citations less than 100),
• Experienced - P < 25 or C < 625 (the number of publications less than 25 or the number of citations less than 625),
• Master - P < 50 or C < 2500 (the number of publications less than 50 or the number of citations less than 2500),
• Star - P ≥ 50 and C ≥ 2500 (both the number of publications greater than 50 and the number of citations greater than 2500).

The chart below illustrates experience levels of first authors in cases of publications with multiple authors.