Science China Mathematics

Top Research Topics at Science China-mathematics?

Science China-mathematics was organized to reinforce research efforts on Mathematical analysis, Pure mathematics, Combinatorics, Discrete mathematics and Applied mathematics. While Science China-mathematics focused on Mathematical analysis, it was also able to explore topics like Type (model theory) and Nonlinear system. The journal focused on Pure mathematics research but expanded to cover Algebra.

Science China-mathematics addresses concerns in Applied mathematics which are intertwined with other disciplines, such as Estimator and Mathematical optimization.

• Mathematical analysis (30.22%)
• Pure mathematics (22.63%)
• Combinatorics (19.63%)

What are the most cited papers published in the journal?

• Existence of periodic and subharmonic solutions for second-order superlinear difference equations (199 citations)
• Survey on normal distributions, central limit theorem, Brownian motion and the related stochastic calculus under sublinear expectations (175 citations)
• Super congruences and Euler numbers (156 citations)

Research areas of the most cited articles at Science China-mathematics:

The most cited articles investigate studies in Mathematical analysis, Discrete mathematics, Pure mathematics, Combinatorics and Applied mathematics. While work presented in the most cited publications provide substantial information on Mathematical analysis, it also covers topics in Finite element method and Nonlinear system. While Pure mathematics is the focus of the published papers, it also provides insights into the studies of Metric (mathematics) and Algebra.

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

• Quantum mechanics
• Mathematical analysis
• Statistics

The previous edition focused in particular on these issues:

Science China-mathematics focuses largely on the fields of Pure mathematics, Combinatorics, Applied mathematics, Mathematical analysis and Type (model theory). Science China-mathematics explores topics in Pure mathematics which can be helpful for research in disciplines like Finsler manifold, Metric (mathematics) and Extension (predicate logic). The Combinatorics works featured in the journal incorporate elements from Nabla symbol, Omega, Bounded function and Order (ring theory).

While Applied mathematics is the focus of the journal, it also provided insights into the studies of Phase (waves), Energy (signal processing), Estimator, Nonlinear system and Discretization. The research on Mathematical analysis featured in Science China-mathematics combines topics in other fields like Compressibility and Boundary (topology). Type (model theory) research featured in Science China-mathematics incorporates concerns from various other topics such as Zero (complex analysis), Mean curvature and Space (mathematics).

The most cited articles from the last journal are:

• Diffusion and mixing in fluid flow via the resolvent estimate (24 citations)
• Weak Hardy-type spaces associated with ball quasi-Banach function spaces I: Decompositions with applications to boundedness of Calderón-Zygmund operators (15 citations)
• On local strong and classical solutions to the three-dimensional barotropic compressible Navier-Stokes equations with vacuum (10 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 Science China-mathematics (based on the number of publications) are:

• Dachun Yang (23 papers) published 1 paper at the last edition,
• Kefeng Liu (17 papers) published 1 paper at the last edition the same number as at the previous edition,
• Shanzhen Lu (16 papers) absent at the last edition,
• Lixing Zhu (14 papers) published 1 paper at the last edition the same number as at the previous edition,
• Yanpei Liu (12 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 Science China-mathematics (based on the number of publications) are:

• Chinese Academy of Sciences (711 papers) published 11 papers at the last edition, 4 less than at the previous edition,
• Peking University (301 papers) published 16 papers at the last edition, 6 more than at the previous edition,
• Beijing Normal University (200 papers) published 8 papers at the last edition, 4 more than at the previous edition,
• University of Science and Technology of China (175 papers) published 9 papers at the last edition, 5 more than at the previous edition,
• Tsinghua University (168 papers) published 5 papers at the last edition, 2 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, 5.49% of publications had an unrecognized affiliation. Out of the publications with recognized affiliations, 45.81% were posted by at least one author from the top 10 institutions publishing in the journal. Another 15.48% included authors affiliated with research institutions from the top 11-20 affiliations. Institutions from the 21-50 range included 12.90% of all publications and 25.81% 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.