Trending Mathematical Concepts in Japan — September 2026
The 99 most-viewed mathematical concepts on Wikipedia, September 2026 (Japanese-language edition). Ranked by real-world attention. Top: Navier–Stokes equations. Data as of 26 October 2026.
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- September 2026 · Data as of 26 October 2026
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- 99 mathematical concepts — drawn from 1,411,216 articles Wikipedia recorded views for in this window
This counts a Wikipedia language edition, not a country's residents — Measured from the Japanese-language Wikipedia edition — readers worldwide, not residents of Japan. Nothing here is capped or sampled: it is every view Wikipedia published for these articles in the window. Rows carrying a 📰 badge add news coverage from GDELT; entity names and types come from Wikidata. Looking for what one country read? That is what the world reads — a different, capped measurement.
Where this data comes from ›99
Ranked
312,300
Total Views (September 2026)
1
Navier–Stokes equations
system of nonlinear partial differential equations describing the motion of viscous fluids
39,059
views
views
2
Tetris
1984 tile-matching puzzle video game series
20,659
views
views
3
pi
constant ratio of the circumference of a circle to its diameter
16,555
views
views
4
Riemann hypothesis
conjecture in mathematics linked to the repartition of prime numbers
10,266
views
views
5
Poincaré conjecture
theorem in geometric topology that every simply connected, closed 3-manifold is homeomorphic to the 3-sphere
10,263
views
views
6
P versus NP problem
unsolved problem in computer science about time complexity
8,812
views
views
7
Monty Hall problem
mathematical problem
7,534
views
views
8
Roman numerals
numbers in the Roman numeral system
7,375
views
views
9
Solitary 7
arithmetical restoration
6,916
views
views
10
Fibonacci number
integer in the infinite Fibonacci sequence
6,877
views
views
11
Hodge conjecture
conjecture in algebraic geometry that every Hodge class on a nonsingular complex projective manifold is a linear combination with rational coefficients of the cohomology classes of complex subvarieties
6,722
views
views
12
Euler's number
mathematical constant; limit of (1 + 1/n)^n as n approaches infinity; transcendental number approximately equal 2.718281828
5,822
views
views
13
Kardashev scale
Proposed scale by which the scope of a civilisation might be measured
5,065
views
views
14
sudoku
logic-based number-placement puzzle
4,980
views
views
15
Collatz conjecture
conjecture in mathematics that concerns sequences
4,844
views
views
16
golden ratio
ratio between two quantities whose sum is at the same ratio to the larger one
4,747
views
views
17
Feynman point
sequence of digits in the math constant π, incorrectly attributed to Feynman
4,676
views
views
18
Occam's razor
philosophical principle evaluating reasoning on the basis of its simplicity
4,561
views
views
19
abc conjecture
number theory conjecture
4,044
views
views
20
Financial numerals
Chinese character numerals that are equivalents of ordinary numerals but are more complicated so as to prevent forgery of cheques etc.; e.g. 1 一 → 壹, 2 二 → 貳
3,812
views
views
21
Fourier transform
mathematical transform that expresses a function of time as a function of frequency
3,784
views
views
22
Vitruvian Man
drawing by Leonardo da Vinci
3,488
views
views
23
Bitcoin
digital cash system and associated currency
3,412
views
views
24
Birch and Swinnerton-Dyer conjecture
conjecture
3,058
views
views
25
Laplace transform
the integral transform ∫₀^∞ d𝑠 𝑓(𝑡)exp(−𝑠𝑡)
2,984
views
views
26
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Stable Diffusion
image-generating machine learning model
2,937
views
views
27
mass–energy equivalence
physical law relating mass to energy
2,835
views
views
28
MP3 Audio
open standard lossy compression format for digital audio
2,833
views
views
29
Monte Carlo method
broad class of computational algorithms using random sampling to obtain numerical results
2,593
views
views
30
Möbius strip
two-dimensional surface with only one side and only one edge
2,514
views
views
31
Turing test
test of a machine's ability to exhibit intelligent behaviour equivalent to, or indistinguishable from, that of a human
2,470
views
views
32
map projection
representation of the surface of a sphere or ellipsoid onto a plane map
2,466
views
views
33
Riemann zeta function
analytic function
2,305
views
views
34
Goldbach's conjecture
Conjecture that every even integer greater than 2 is the sum of two primes
2,099
views
views
35
birthday problem
mathematical problem
2,065
views
views
36
Reynolds number
dimensionless quantity that is used to help predict similar flow patterns in different fluid flow situations
2,051
views
views
37
Einstein field equations
field equations in general relativity
2,025
views
views
38
Jacobian conjecture
conjecture asserting that, over a characteristic-zero field K, given a polynomial map f: Kⁿ → Kⁿ, if its Jacobian determinant J: Kⁿ → K is a nonzero constant map, then f admits a polynomial inverse g: Kⁿ → Kⁿ
1,989
views
views
39
moving sofa problem
mathematical problem about moving the largest possible shape around a 90° corner
1,945
views
views
40
Base64
group of binary-to-text encoding schemes using 64 symbols (plus padding)
1,920
views
views
41
Mandelbrot set
fractal-like set that plays a significant role in chaos research
1,904
views
views
42
function
association of a single output to each input
1,862
views
views
43
Tower of Hanoi
mathematical game or puzzle
1,856
views
views
44
tensor
multilinear map on some combination of scalars, vectors, covectors, and tensors
1,821
views
views
45
Buffon's needle
question in geometric probability
1,740
views
views
46
secretary problem
mathematical problem
1,738
views
views
47
Kaprekar number
non-negative integer, the representation of whose square in that base can be split into two parts that add up to the original number again
1,733
views
views
48
Taylor series
expression of a function as an infinite sum
1,679
views
views
49
N-BOX
1,670
views
views
50
Bernoulli number
rational number sequence 𝐵ₖ such that (𝑚+1)∑𝑛ᵐ=(ᵐ⁺¹₀)𝐵₀𝑛ᵐ⁺¹−(ᵐ⁺¹₁)𝐵₁𝑛ᵐ+(ᵐ⁺¹₂)𝐵₂𝑛ᵐ¯¹−(ᵐ⁺¹₃)𝐵₃𝑛ᵐ¯²+⋯
1,632
views
views
51
Chinese numerals
words and characters used to denote numbers in Chinese
1,600
views
views
52
Nonogram
picture logic puzzles in which cells in a grid must be colored or left blank according to numbers at the side of the grid to reveal a hidden picture
1,519
views
views
53
quadratic formula
formula that provides the solution(s) to a quadratic equation
1,491
views
views
54
Empty Fort Strategy
the thirty-second of the Thirty-Six Stratagems
1,476
views
views
55
Platonic solid
convex regular polyhedra with the same number of faces at each vertex
1,464
views
views
56
hexadecimal
numeral system with 16 as its base
1,459
views
views
57
binary numeral system
system that represents numeric values using two symbols; 0 or 1
1,438
views
views
58
information entropy
expected value of the amount of information delivered by a message
1,420
views
views
59
Drake equation
probabilistic argument to estimate the number of alien civilizations in our galaxy
1,414
views
views
60
gematria
numeral system
1,402
views
views
61
Dijkstra's algorithm
graph search algorithm
1,389
views
views
62
infinity
mathematical concept of something without any limit
1,387
views
views
63
Roche limit
astronomical concept
1,381
views
views
64
topological space
set of points and set of neighborhoods that satisfy axioms relating those points to those neighborhoods
1,358
views
views
65
Euler equations
set of quasilinear hyperbolic equations governing adiabatic and inviscid flow
1,333
views
views
66
Lebesgue integration
Method of integration
1,264
views
views
67
Lorentz transformation
space-time coordinate transformation that conserves the form of Maxwell’s equations
1,263
views
views
68
Hilbert space
inner product space that is metrically complete; a Banach space whose norm induces an inner product (follows the parallelogram identity)
1,249
views
views
69
Wolstenholme prime
prime number satisfying a certain congruence
1,229
views
views
70
square root
inverse operation of square for finding the original base number; that base number itself
1,225
views
views
71
travelling salesperson problem
NP-hard problem in combinatorial optimization
1,218
views
views
72
bidirectional encoder representations from transformers
deep learning artificial neural network language model
1,200
views
views
73
Arrhenius equation
formula for the temperature dependence of reaction rates
1,199
views
views
74
Basel problem
mathematical problem
1,192
views
views
75
6÷2(1+2)
1,190
views
views
76
silver ratio
real number, second member of the sequence generalized from the golden ratio
1,172
views
views
77
Newton's method
algorithm for finding a zero of a function
1,168
views
views
78
von Neumann architecture
computer architecture using a common memory bus and address space for instructions and data
1,161
views
views
79
Jacobian matrix
the matrix of all first-order partial derivatives of a vector-valued function
1,159
views
views
80
Turing completeness
ability of a computing system to simulate Turing machines
1,127
views
views
81
big O notation
form of Landau notation representing asymptotically equivalent or slower growth
1,116
views
views
82
duodecimal
base twelve number system
1,111
views
views
83
number
mathematical object used to count, label, and measure
1,111
views
views
84
convolution
binary mathematical operation on functions, defined as the integral of the product of two functions after one is reflected about the y-axis and shifted, evaluated for all values of shift, producing the convolution function
1,109
views
views
85
harmony
process by which individual sounds are joined together or composed into whole units or compositions
1,091
views
views
86
axiom
statement of a theory that is taken to be true
1,080
views
views
87
1 + 2 + 3 + 4 + · · ·
divergent series
1,074
views
views
88
Ulam spiral
a visualization of the prime numbers formed by arranging the integers into a spiral
1,066
views
views
89
Kalman filter
algorithm that estimates unknowns from a series of measurements over time
1,055
views
views
90
sieve of Eratosthenes
ancient algorithm for generating prime numbers
1,045
views
views
91
chirality
geometric property of some molecules and ions
1,024
views
views
92
Heron's formula
formula for calculating the area of a triangle
1,015
views
views
93
inverse Galois problem
unsolved problem in mathematics
1,014
views
views
94
backpropagation
optimization algorithm for artificial neural networks
1,008
views
views
95
group
algebraic set with an invertible, associative internal operation admitting a neutral element
998
views
views
96
Euclidean algorithm
algorithm for computing greatest common divisors
969
views
views
97
Ethereum
public blockchain platform with programmable transaction functionality
962
views
views
98
Euler–Mascheroni constant
mathematical constant; limiting difference between the harmonic series and the natural logarithm; equal to ca 0.577
956
views
views
99
Three Prisoners problem
mathematical problem
952
views
views