Trending Mathematical Concepts in Japan this year
The 100 most-viewed mathematical concepts this year on Wikipedia (Japan). Ranked by real-world attention. Top: pi.
100
Ranked
19,289
Total Views (this year)
1
pi
constant ratio of the circumference of a circle to its diameter
1,137
views
views
2
Tetris
1984 tile-matching puzzle video game series
1,005
views
views
3
Fibonacci number
integer in the infinite Fibonacci sequence
589
views
views
4
Roman numerals
numbers in the Roman numeral system
558
views
views
5
Monty Hall problem
mathematical problem
514
views
views
6
sudoku
logic-based number-placement puzzle
494
views
views
7
Euler's number
mathematical constant; limit of (1 + 1/n)^n as n approaches infinity; transcendental number approximately equal 2.718281828
493
views
views
8
22/7
fraction approximating pi
468
views
views
9
Occam's razor
philosophical principle used to judge credibility of statements
426
views
views
10
Riemann hypothesis
conjecture in mathematics linked to the repartition of prime numbers
424
views
views
11
Fourier transform
mathematical transform that expresses a function of time as a function of frequency
414
views
views
12
golden ratio
ratio between two quantities whose sum is at the same ratio to the larger one
337
views
views
13
abc conjecture
number theory conjecture
323
views
views
14
Navier–Stokes equations
system of nonlinear partial differential equations describing the motion of viscous fluids
307
views
views
15
Chinese 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.
300
views
views
16
Collatz conjecture
conjecture in mathematics that concerns sequences
297
views
views
17
birthday problem
mathematical problem
289
views
views
18
Bitcoin
digital cash system and associated currency
275
views
views
19
mass–energy equivalence
physical law relating mass to energy
259
views
views
20
Poincaré conjecture
theorem in geometric topology that every simply connected, closed 3-manifold is homeomorphic to the 3-sphere
251
views
views
21
P versus NP problem
unsolved problem in computer science about time complexity
242
views
views
22
Kardashev scale
Proposed scale by which the scope of a civilisation might be measured
242
views
views
23
Taylor series
expression of a function as an infinite sum
238
views
views
24
Monte Carlo method
broad class of computational algorithms using random sampling to obtain numerical results
229
views
views
25
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Stable Diffusion
image-generating machine learning model
228
views
views
26
moving sofa problem
mathematical problem about moving the largest possible shape around a 90° corner
225
views
views
27
Vitruvian Man
drawing by Leonardo da Vinci
217
views
views
28
Drake equation
probabilistic argument to estimate the number of alien civilizations in our galaxy
214
views
views
29
Möbius strip
two-dimensional surface with only one side and only one edge
208
views
views
30
tensor
multilinear map on some combination of scalars, vectors, covectors, and tensors
194
views
views
31
MP3
open standard lossy compression format for digital audio
194
views
views
32
Tower of Hanoi
mathematical game or puzzle
194
views
views
33
Minesweeper
logic puzzle video game genre
186
views
views
34
Turing test
test of a machine's ability to exhibit intelligent behaviour equivalent to, or indistinguishable from, that of a human
181
views
views
35
Hilbert space
inner product space that is metrically complete; a Banach space whose norm induces an inner product (follows the parallelogram identity)
172
views
views
36
Laplace transform
the integral transform ∫₀^∞ d𝑠 𝑓(𝑡)exp(−𝑠𝑡)
168
views
views
37
Base64
group of binary-to-text encoding schemes using 64 symbols (plus padding)
165
views
views
38
Riemann zeta function
analytic function
158
views
views
39
Newton's method
algorithm for finding a zero of a function
150
views
views
40
quadratic formula
formula that provides the solution(s) to a quadratic equation
149
views
views
41
convolution
binary mathematical operation on functions, defined as the integral of the product of two functions after one is reflected about the y-axis
141
views
views
42
travelling salesperson problem
NP-hard problem in combinatorial optimization
139
views
views
43
secretary problem
mathematical problem
138
views
views
44
Reynolds number
dimensionless quantity that is used to help predict similar flow patterns in different fluid flow situations
136
views
views
45
Arrhenius equation
formula for the temperature dependence of reaction rates
134
views
views
46
binary numeral system
system that represents numeric values using two symbols; 0 or 1
133
views
views
47
Dijkstra's algorithm
graph search algorithm
133
views
views
48
Goldbach's conjecture
Conjecture that every even integer greater than 2 is the sum of two primes
130
views
views
49
big O notation
form of Landau notation representing asymptotically equivalent or slower growth
124
views
views
50
Turing completeness
ability of a computing system to simulate Turing machines
123
views
views
51
function
association of a single output to each input
120
views
views
52
Euclidean algorithm
algorithm for computing greatest common divisors
118
views
views
53
binomial distribution
probability distribution
116
views
views
54
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
114
views
views
55
Grothendieck group
Abelian group constructed universally from a commutative monoid
114
views
views
56
information entropy
expected value of the amount of information delivered by a message
114
views
views
57
Basel problem
mathematical problem
113
views
views
58
infinity
mathematical concept of something without any limit
113
views
views
59
square root of 2
unique positive real number which when multiplied by itself gives 2
111
views
views
60
topological space
set of points and set of neighborhoods that satisfy axioms relating those points to those neighborhoods
110
views
views
61
Platonic solid
convex regular polyhedra with the same number of faces at each vertex
109
views
views
62
Jacobian matrix
the matrix of all first-order partial derivatives of a vector-valued function
107
views
views
63
hexadecimal
numeral system with 16 as its base
107
views
views
64
von Neumann architecture
computer architecture using a common memory bus and address space for instructions and data
105
views
views
65
Ulam spiral
a visualization of the prime numbers formed by arranging the integers into a spiral
104
views
views
66
6÷2(1+2)
103
views
views
67
gematria
numeral system
102
views
views
68
Hodge conjecture
conjecture in algebraic geometry that every Hodge class on a nonsingular complex projective manifold is a linear combination with rational c
101
views
views
69
harmony
process by which individual sounds are joined together or composed into whole units or compositions
100
views
views
70
Roche limit
astronomical concept
100
views
views
71
quicksort
divide and conquer sorting algorithm
98
views
views
72
Empty Fort Strategy
the thirty-second of the Thirty-Six Stratagems
98
views
views
73
sieve of Eratosthenes
ancient algorithm for generating prime numbers
98
views
views
74
Mandelbrot set
fractal-like set that plays a significant role in chaos research
98
views
views
75
square root
inverse operation of square for finding the original base number; that base number itself
97
views
views
76
Fourier series
decomposition of periodic functions into sums of simpler sinusoidal forms
96
views
views
77
Lebesgue integration
Method of integration
96
views
views
78
Birch and Swinnerton-Dyer conjecture
conjecture
95
views
views
79
imaginary unit
square root of negative one, used to define complex numbers
94
views
views
80
Boltzmann distribution
probability distribution of energy states of a system
93
views
views
81
Laplace operator
divergence of the gradient
91
views
views
82
Dedekind cut
method of construction of the real numbers
90
views
views
83
silver ratio
real number, second member of the sequence generalized from the golden ratio
90
views
views
84
chirality
geometric property of some molecules and ions
89
views
views
85
Chinese numerals
words and characters used to denote numbers in Chinese
89
views
views
86
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+⋯
89
views
views
87
N-BOX
88
views
views
88
Pauli matrices
matrices important in quantum mechanics and the study of spin
88
views
views
89
group
algebraic set with an invertible, associative internal operation admitting a neutral element
87
views
views
90
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
86
views
views
91
number
mathematical object used to count, label, and measure
85
views
views
92
bubble sort
simple sorting algorithm
84
views
views
93
Lie algebra
vector space with an alternating binary operation satisfying the Jacobi identity.
84
views
views
94
Heron's formula
formula for calculating the area of a triangle
82
views
views
95
Kalman filter
algorithm that estimates unknowns from a series of measurements over time
82
views
views
96
Lorentz transformation
space-time coordinate transformation that conserves the form of Maxwell’s equations
82
views
views
97
partial derivative
derivative of a function of several variables with respect to one variable, with the others held constant
80
views
views
98
MD5
message-digest hashing algorithm
78
views
views
99
axiom
statement of a theory that is taken to be true
78
views
views
100
scientific notation
method of writing numbers, especially very large or small ones
78
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