Class information for:
Level 1: PERFECT NUMBER//SOCIABLE NUMBERS//SUM OF DIVISORS

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
27571 186 10.8 26%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
1366 7763 ACTA ARITHMETICA//JOURNAL OF NUMBER THEORY//CIRCLE METHOD

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 PERFECT NUMBER Author keyword 17 79% 6% 11
2 SOCIABLE NUMBERS Author keyword 14 100% 4% 7
3 SUM OF DIVISORS Author keyword 11 52% 8% 15
4 NEAR PERFECT NUMBER Author keyword 11 100% 3% 6
5 ODD PERFECT NUMBERS Author keyword 11 100% 3% 6
6 ALIQUOT CYCLES Author keyword 9 83% 3% 5
7 PERFECT NUMBERS Author keyword 9 59% 5% 10
8 AMICABLE PAIR Author keyword 6 71% 3% 5
9 DEFICIENT NUMBERS Author keyword 6 100% 2% 4
10 ODD PERFECT NUMBER Author keyword 6 100% 2% 4

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 PERFECT NUMBER 17 79% 6% 11 Search PERFECT+NUMBER Search PERFECT+NUMBER
2 SOCIABLE NUMBERS 14 100% 4% 7 Search SOCIABLE+NUMBERS Search SOCIABLE+NUMBERS
3 SUM OF DIVISORS 11 52% 8% 15 Search SUM+OF+DIVISORS Search SUM+OF+DIVISORS
4 NEAR PERFECT NUMBER 11 100% 3% 6 Search NEAR+PERFECT+NUMBER Search NEAR+PERFECT+NUMBER
5 ODD PERFECT NUMBERS 11 100% 3% 6 Search ODD+PERFECT+NUMBERS Search ODD+PERFECT+NUMBERS
6 ALIQUOT CYCLES 9 83% 3% 5 Search ALIQUOT+CYCLES Search ALIQUOT+CYCLES
7 PERFECT NUMBERS 9 59% 5% 10 Search PERFECT+NUMBERS Search PERFECT+NUMBERS
8 AMICABLE PAIR 6 71% 3% 5 Search AMICABLE+PAIR Search AMICABLE+PAIR
9 DEFICIENT NUMBERS 6 100% 2% 4 Search DEFICIENT+NUMBERS Search DEFICIENT+NUMBERS
10 ODD PERFECT NUMBER 6 100% 2% 4 Search ODD+PERFECT+NUMBER Search ODD+PERFECT+NUMBER

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ.
in class
1 PERFECT NUMBERS 15 88% 4% 7
2 DISTINCT PRIME FACTORS 6 100% 2% 4
3 AMICABLE NUMBERS 4 75% 2% 3
4 PHIN N 3 100% 2% 3
5 ZAHLEN 3 100% 2% 3
6 ALIQUOT CYCLES 2 67% 1% 2
7 ODD PERFECT 1 100% 1% 2
8 QUASIPERFECT NUMBERS 1 100% 1% 2
9 N PHIN 1 50% 1% 1
10 OMEGA RESULT 1 50% 1% 1

Journals

Reviews

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ.
in class
1 MATH COMPUTAC 0 17% 0.5% 1
2 UP A5028 0 17% 0.5% 1
3 WENTIAN 0 11% 0.5% 1
4 MOSCOW LRI 0 100% 0.5% 1

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000217635 CARMICHAEL NUMBER//CARMICHAEL NUMBERS//STRONG PSEUDOPRIMES
2 0.0000108197 SPACE OF ANALYTIC FUNCTIONS//JOINT UNIVERSALITY//PERIODIC HURWITZ ZETA FUNCTION
3 0.0000103213 COVERING SYSTEMS//SUMS OF PRIME POWERS//COVERING CONGRUENCES
4 0.0000090404 SELBERG CLASS//LIS CRITERION//STIELTJES CONSTANTS
5 0.0000077246 LIGHTS OUT//LIGHTS OUT PUZZLE//SIGMA GAME
6 0.0000076345 FRIABLE INTEGERS//COMP ALGEBRA//ADDITIVE ARITHMETIC FUNCTION
7 0.0000064716 GAUSSIAN HYPERGEOMETRIC SERIES//FERMAT QUOTIENTS//CENTRAL BINOMIAL COEFFICIENTS
8 0.0000062819 KATEDRA MATEMAT RGF A//DIRICHLET DIVISOR PROBLEM//DIVISOR PROBLEM
9 0.0000046839 PRIME GRAPH//DEGREE PATTERN//COMMUTING GRAPH
10 0.0000037689 APOLLONIAN CIRCLES//APPROXIMATE GROUPS//BROCARD ANGLE