1, the highlight is that this year's forum mathematics Pi and Cambridge J. Math have influencing factors. From the perspective of influencing factors, forum mathematics Pi is far ahead of Cambridge J. Math.

2, the slot point is naturally that the IF of many good magazines is too low, and that of some ordinary magazines (such as JDE) is too high. Every year, but this year, the IF of many magazines is horribly low. Acta Math is the most typical one, and its influence factor is less than half of JAMS and lower than CPAM.

introduce

JCR counts and calculates the citation and cited data of 4,700 journals, including 3,500 journals included in SCI, and defines the impact factors and other indicators to be reported by each journal.

The impact factor of a periodical refers to the average number of citations in the previous two years. The higher the impact factor of a publication, the higher the citation rate of its published documents, which on the one hand shows that the research results reported by these documents have great influence, on the other hand, it also reflects the high academic level of the publication.