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ENIGMATH @blogenigmath.bsky.social · 8h

Abel’s test
#enigmath #math #dictionary

Abel’s test (also known as Abel’s criterion) is a method of testing for the convergence of an infinite series. The test is named after mathematician Niels Abel. There are two slightly d…

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ENIGMATH @blogenigmath.bsky.social · 1d

“It suggests to me that consciousness and our ability to do mathematics are no mere accident, no trivial detail, no insignificant by-product of evolution that is piggybacking on some other mundane property. ”

Paul Davies
– English physicist, writer and broadcaster
#enigmath #math #quote

ENIGMATH @blogenigmath.bsky.social · 2d

Couple on Seat
Artist: Lynn Chadwick.
Created: 1984.
Media: Steel.
Genre: Abstract art.
Location: Cabot Square, London, United Kingdom.
#enigmath #math #art

3

ENIGMATH @blogenigmath.bsky.social · 3d

Geisha
Cartesian equation
x²yz + x²z² = y³z + y³
#enigmath #math #surface

1

ENIGMATH @blogenigmath.bsky.social · 4d

Snub cube
Polyhedron with thirty eight faces: six squares and thirty two equilateral triangles.
#enigmath #math #polyhedron

Snub cube

Polyhedron with thirty eight faces: six squares and thirty two equilateral triangles. It has sixty edges and twenty four vertices. It is a Archimedean solid as it is a convex uniform polyhedra comp…

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ENIGMATH @blogenigmath.bsky.social · 5d

Pentagonal tiling 6
#enigmath #math #tiling

Pentagonal tiling 6

$latex \hat{B} + \hat{D} = 180^{\circ}&s=2$ $latex \hat{E} = 2\hat{A}&s=2$ $latex \overline{AE} = \overline{CD} = \overline{DE}&s=2$ $latex \overline{AB} = \overline{BC}&s=2$

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ENIGMATH @blogenigmath.bsky.social · 6d

Maria Agnesi
Italian mathematician.
#enigmath #math #mathematician

Maria Agnesi

Born: May 16, 1718, Milan, Duchy of Milan (currently Italy). Died: January 9, 1799, Milan, Cisalpine Republic (currently Italy). Main Publications: Instituzioni Analitiche ad uso della gioven…

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ENIGMATH @blogenigmath.bsky.social · 7d

Enneadecagon
Polygon with nineteen sides and nineteen vertices.
#enigmath #math #polygon

Enneadecagon

Polygon with nineteen sides and nineteen vertices. The sum of the internal angles of a enneadecagon is 3060° The area of a regular enneadecagon is given by the formula: $latex \text{Area}= \frac{19…

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ENIGMATH @blogenigmath.bsky.social · 8d

Epicycloid
#enigmath #math #curve

Epicycloid

The parametric equations of the epicycloid can be given by $latex x = \left(a+b \right) \cos t – b \cos \left( \frac{a+b}{b} t \right), \, y = \left(a+b \right) \sin t – b \sin \left( \…

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ENIGMATH @blogenigmath.bsky.social · 9d

Fourteen
Fourteen is a composite number with proper divisors 1, 2 and 7.
#enigmath #math #number

Fourteen

Fourteen is a composite number with proper divisors 1, 2 and 7 Also: A tetradecagon has 14 sides A truncated cube, a truncated octahedron, a cuboctahedron, and a quasitruncated hexahedron have 14 f…

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ENIGMATH @blogenigmath.bsky.social · 10d

Slimetrail
Abstract game invented by Bill Taylor in 1992 using a 8 x 8 board, a white stone and about sixty black stones.
#enigmath #math #game

Slimetrail

Abstract game invented by Bill Taylor in 1992 using a 8 x 8 board, a white stone and about sixty black stones. The squares marked by 1 and 2 are the final squares of the first and second player res…

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ENIGMATH @blogenigmath.bsky.social · 11d

Puzzle #18
The diagram shows two squares. The rightmost vertex of the big square is aligned with the base of the small square.
What is the area of the big square?
This puzzle was published in the @mathematicala.bsky.social
#enigmath #math #puzzle
Solution blogenigmath.wordpress.com/2025/09/29/p...

1

ENIGMATH @blogenigmath.bsky.social · 12d

Abelian and Tauberian theorems
Abelian and Tauberian theorems are theorems giving conditions for two methods of summing divergent series to give the same result, named after Niels Abel and Alfred Tauber.
#enigmath #math #dictionary

Abelian and Tauberian theorems

Abelian and Tauberian theorems are theorems giving conditions for two methods of summing divergent series to give the same result, named after Niels Abel and Alfred Tauber. Abelian theorem A theore…

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ENIGMATH @blogenigmath.bsky.social · 13d

Paul Davies (1)
#enigmath #math #quote

Paul Davies (1)

“Underpinning everything… are the laws of physics. These remarkably ingenious laws are able to permit matter to self-organize to the point where consciousness emerges in the cosmos—mind…

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ENIGMATH @blogenigmath.bsky.social · 14d

Green and White
Artist: Carmen Herrera.
Created: 1956.
Media: Acrylic and canvas.
Genre: Abstract art.
Location: Whitney Museum of American Art, New York, United States of America.
#enigmath #math #art

2

ENIGMATH @blogenigmath.bsky.social · 15d

Flirt
Cartesian equation
x² − x³ + y² + y⁴ + z³ − 10z⁴ = 0
#enigmath #math #surface

ENIGMATH @blogenigmath.bsky.social · 16d

Truncated icosidodecahedron
Polyhedron with sixty two faces: thirty squares, twenty regular hexagons and twelve regular decagons.
#enigmath #math #polyhedron

Truncated icosidodecahedron

Polyhedron with sixty two faces: thirty squares, twenty regular hexagons and twelve regular decagons. It has one hundred eighty edges and one hundred twenty vertices. It is a Archimedean solid as i…

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2

ENIGMATH @blogenigmath.bsky.social · 17d

Pentagonal tiling 5
#enigmath #math #tiling

Pentagonal tiling 5

$latex \hat{A} = 60^{\circ}&s=2$ $latex \hat{D} = 120^{\circ}&s=2$ $latex \hat{B} + \hat{C} + \hat{E} = 360^{\circ}&s=2$ $latex \overline{AB} = \overline{AE}&s=2$ $latex \overline{C…

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1

ENIGMATH @blogenigmath.bsky.social · 18d

Jabir ibn Aflah
Spanish mathematician.
#enigmath #math #mathematician

Jabir ibn Aflah

Born: 1100 CE, Seville, Spain. Died: 1150 CE, Seville, Spain. Main Publication: Iṣlāḥ al-maǧisṭī (Correction of the Almagest written by Claudius Ptolemy). Main invention: Torquetum.

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ENIGMATH @blogenigmath.bsky.social · 19d

Octadecagon
Polygon with eighteen sides and eighteen vertices.
#enigmath #math #polygon

Octadecagon

Polygon with eighteen sides and eighteen vertices. The sum of the internal angles of a octadecagon is 2880° The area of a regular octadecagon is given by the formula: $latex \text{Area}= \frac{18}{…

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ENIGMATH @blogenigmath.bsky.social · 20d

Trochoid
The parametric equations of the trochoid can be given by
x = rt - a sin t, y = r - a cos t
#enigmath #math #curve

ENIGMATH @blogenigmath.bsky.social · 21d

Thirteen
Thirteen is a prime number.
#enigmath #math #number

Thirteen

Thirteen is a prime number. 13 is a happy number as eventually reaches 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 1² + 3² = 10 and 1⁰ + 0² = …

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ENIGMATH @blogenigmath.bsky.social · 22d

Nine Men’s Morris
Nine Men’s Morris is an ancient board game that uses 9 white pieces and 9 black pieces, whose origin is unknown.
#enigmath #math #game

Nine Men’s Morris

Nine Men’s Morris is an ancient board game that uses 9 white pieces and 9 black pieces, whose origin is unknown. Rules The game begins with an empty board. Players take turns placing their pi…

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ENIGMATH @blogenigmath.bsky.social · 23d

Puzzle 17
A pig’s face is represented by a big circle. Its snout is represented by a small circle that passes through the centre/center of the big circle and is tangent to it. The perimeter of the pig’s snout is 6π.
What is the area of the pig’s face?
blogenigmath.wordpress.com/2025/09/17/p...

ENIGMATH @blogenigmath.bsky.social · 24d

Abel’s summation formula
The Abel’s summation formula, introduced by Niels Abel, is intensively used in analytic number theory and the study of special functions to compute series.
#enigmath #math #dictionary

Abel’s summation formula

The Abel’s summation formula, introduced by Niels Abel, is intensively used in analytic number theory and the study of special functions to compute series. Let $…

blogenigmath.wordpress.com