ENIGMATH
@blogenigmath.bsky.social
Math blog by Paulo Ferro
https://blogenigmath.wordpress.com
https://blogenigmath.wordpress.com
Pinned
ENIGMATH
@blogenigmath.bsky.social
· Oct 26
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
Great icosahedron
Polyhedron with twenty intersecting triangular faces with five triangles meeting at each vertex in a pentagrammic sequence.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/25/g...
#enigmath #math #polyhedron
Polyhedron with twenty intersecting triangular faces with five triangles meeting at each vertex in a pentagrammic sequence.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/25/g...
#enigmath #math #polyhedron
November 25, 2025 at 7:40 AM
Great icosahedron
Polyhedron with twenty intersecting triangular faces with five triangles meeting at each vertex in a pentagrammic sequence.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/25/g...
#enigmath #math #polyhedron
Polyhedron with twenty intersecting triangular faces with five triangles meeting at each vertex in a pentagrammic sequence.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/25/g...
#enigmath #math #polyhedron
Pentagonal tiling 11
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/24/p...
#enigmath #math #tiling
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/24/p...
#enigmath #math #tiling
November 24, 2025 at 7:15 AM
Pentagonal tiling 11
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/24/p...
#enigmath #math #tiling
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/24/p...
#enigmath #math #tiling
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
November 23, 2025 at 4:17 PM
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
John Aitchison
Born: July 22, 1926, East Linton, East Lothian, Scotland, United Kingdom.
Died: December 23, 2016, Glasgow, Scotland, United Kingdom.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/23/j...
#enigmath #math #mathematician
Born: July 22, 1926, East Linton, East Lothian, Scotland, United Kingdom.
Died: December 23, 2016, Glasgow, Scotland, United Kingdom.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/23/j...
#enigmath #math #mathematician
November 23, 2025 at 12:01 PM
John Aitchison
Born: July 22, 1926, East Linton, East Lothian, Scotland, United Kingdom.
Died: December 23, 2016, Glasgow, Scotland, United Kingdom.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/23/j...
#enigmath #math #mathematician
Born: July 22, 1926, East Linton, East Lothian, Scotland, United Kingdom.
Died: December 23, 2016, Glasgow, Scotland, United Kingdom.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/23/j...
#enigmath #math #mathematician
Fibonacci Day is an informal holiday celebrated on November 23 to honor the Italian mathematician Leonardo of Pisa, also known as Fibonacci. The date, when written in the month/day format (11/23), represents the first four numbers of the Fibonacci sequence: 1, 1, 2, 3.
#enigmath #math #FibonacciDay
#enigmath #math #FibonacciDay
November 23, 2025 at 8:00 AM
Fibonacci Day is an informal holiday celebrated on November 23 to honor the Italian mathematician Leonardo of Pisa, also known as Fibonacci. The date, when written in the month/day format (11/23), represents the first four numbers of the Fibonacci sequence: 1, 1, 2, 3.
#enigmath #math #FibonacciDay
#enigmath #math #FibonacciDay
Nineteen
Nineteen is a prime number.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/22/n...
#enigmath #math #number
Nineteen is a prime number.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/22/n...
#enigmath #math #number
November 22, 2025 at 7:55 AM
Nineteen
Nineteen is a prime number.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/22/n...
#enigmath #math #number
Nineteen is a prime number.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/22/n...
#enigmath #math #number
Abalone
Abalone abstract strategy board game by Michel Lalet and Laurent Lévi in 1987.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/21/a...
#enigmath #math #game
Abalone abstract strategy board game by Michel Lalet and Laurent Lévi in 1987.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/21/a...
#enigmath #math #game
November 21, 2025 at 6:32 AM
Abalone
Abalone abstract strategy board game by Michel Lalet and Laurent Lévi in 1987.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/21/a...
#enigmath #math #game
Abalone abstract strategy board game by Michel Lalet and Laurent Lévi in 1987.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/21/a...
#enigmath #math #game
Puzzle #23
The figure is composed by twenty nine matchsticks.
Move two matchsticks to get a correct multiplication result.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/20/p...
#enigmath #math #puzzle
The figure is composed by twenty nine matchsticks.
Move two matchsticks to get a correct multiplication result.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/20/p...
#enigmath #math #puzzle
November 20, 2025 at 7:53 AM
Puzzle #23
The figure is composed by twenty nine matchsticks.
Move two matchsticks to get a correct multiplication result.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/20/p...
#enigmath #math #puzzle
The figure is composed by twenty nine matchsticks.
Move two matchsticks to get a correct multiplication result.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/20/p...
#enigmath #math #puzzle
Abelian variety
An abelian variety, named after Niels Abel, variety is a higher dimensional version of an elliptic curve.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/19/a...
#enigmath #math #dictionary
An abelian variety, named after Niels Abel, variety is a higher dimensional version of an elliptic curve.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/19/a...
#enigmath #math #dictionary
November 19, 2025 at 7:37 AM
Abelian variety
An abelian variety, named after Niels Abel, variety is a higher dimensional version of an elliptic curve.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/19/a...
#enigmath #math #dictionary
An abelian variety, named after Niels Abel, variety is a higher dimensional version of an elliptic curve.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/19/a...
#enigmath #math #dictionary
“The nature of mathematical demonstration is totally different from all other, and the difference consists in this—that, instead of showing the contrary of the proposition asserted to be only improbable, it...”
Read the full quote 👇
blogenigmath.wordpress.com/2025/11/18/a...
#enigmath #math #quote
Read the full quote 👇
blogenigmath.wordpress.com/2025/11/18/a...
#enigmath #math #quote
November 18, 2025 at 7:24 AM
“The nature of mathematical demonstration is totally different from all other, and the difference consists in this—that, instead of showing the contrary of the proposition asserted to be only improbable, it...”
Read the full quote 👇
blogenigmath.wordpress.com/2025/11/18/a...
#enigmath #math #quote
Read the full quote 👇
blogenigmath.wordpress.com/2025/11/18/a...
#enigmath #math #quote
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
November 16, 2025 at 5:45 PM
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
Great stellated dodecahedron
Polyhedron with twelve pentagrammic faces with three pentagrams meeting at each vertex.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/16/g...
#enigmath #math #polyhderon
Polyhedron with twelve pentagrammic faces with three pentagrams meeting at each vertex.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/16/g...
#enigmath #math #polyhderon
November 16, 2025 at 7:56 AM
Great stellated dodecahedron
Polyhedron with twelve pentagrammic faces with three pentagrams meeting at each vertex.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/16/g...
#enigmath #math #polyhderon
Polyhedron with twelve pentagrammic faces with three pentagrams meeting at each vertex.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/16/g...
#enigmath #math #polyhderon
Pentagonal tiling 10
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/15/p...
#enigmath #math #tiling
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/15/p...
#enigmath #math #tiling
November 15, 2025 at 7:08 AM
Pentagonal tiling 10
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/15/p...
#enigmath #math #tiling
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/15/p...
#enigmath #math #tiling
Alexander Aigner
Austrian mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/14/a...
#enigmath #math #mathematician
Austrian mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/14/a...
#enigmath #math #mathematician
November 14, 2025 at 9:14 AM
Alexander Aigner
Austrian mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/14/a...
#enigmath #math #mathematician
Austrian mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/14/a...
#enigmath #math #mathematician
Eighteen
Eighteen is a composite number with proper divisors 1, 2, 3, 6 and 9.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/13/e...
#enigmath #math #number
Eighteen is a composite number with proper divisors 1, 2, 3, 6 and 9.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/13/e...
#enigmath #math #number
November 13, 2025 at 7:35 AM
Eighteen
Eighteen is a composite number with proper divisors 1, 2, 3, 6 and 9.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/13/e...
#enigmath #math #number
Eighteen is a composite number with proper divisors 1, 2, 3, 6 and 9.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/13/e...
#enigmath #math #number
Backgammon
Backgammon is a two player board game where each player has fifteen pieces (checkers) which move between twenty-four triangles according to the roll of two dice.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/12/b...
#enigmath #math #game
Backgammon is a two player board game where each player has fifteen pieces (checkers) which move between twenty-four triangles according to the roll of two dice.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/12/b...
#enigmath #math #game
November 12, 2025 at 8:36 AM
Backgammon
Backgammon is a two player board game where each player has fifteen pieces (checkers) which move between twenty-four triangles according to the roll of two dice.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/12/b...
#enigmath #math #game
Backgammon is a two player board game where each player has fifteen pieces (checkers) which move between twenty-four triangles according to the roll of two dice.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/12/b...
#enigmath #math #game
Puzzle #22
The number 439 is created out of fifteen matchsticks.
Move two matchsticks to get a 3-digit number, all of them even numbers.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/11/p...
#enigmath #math #puzzle
The number 439 is created out of fifteen matchsticks.
Move two matchsticks to get a 3-digit number, all of them even numbers.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/11/p...
#enigmath #math #puzzle
November 11, 2025 at 8:13 AM
Puzzle #22
The number 439 is created out of fifteen matchsticks.
Move two matchsticks to get a 3-digit number, all of them even numbers.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/11/p...
#enigmath #math #puzzle
The number 439 is created out of fifteen matchsticks.
Move two matchsticks to get a 3-digit number, all of them even numbers.
This puzzle was published on the @newscientist.com.
Solution 👇
blogenigmath.wordpress.com/2025/11/11/p...
#enigmath #math #puzzle
Abel transformation
Abel transformation, named after Niels Abel, transforms the summation of products of sequences into other summations, often simplifying the computation or (especially) estimation...
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/10/a...
#enigmath #math #dictionary
Abel transformation, named after Niels Abel, transforms the summation of products of sequences into other summations, often simplifying the computation or (especially) estimation...
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/10/a...
#enigmath #math #dictionary
November 10, 2025 at 8:13 AM
Abel transformation
Abel transformation, named after Niels Abel, transforms the summation of products of sequences into other summations, often simplifying the computation or (especially) estimation...
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/10/a...
#enigmath #math #dictionary
Abel transformation, named after Niels Abel, transforms the summation of products of sequences into other summations, often simplifying the computation or (especially) estimation...
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/10/a...
#enigmath #math #dictionary
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
November 9, 2025 at 8:17 PM
Mastering Geometry Puzzles
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
My new book with 120 geometry puzzles, all of them with step-by-step solutions.
You can pre-order it on Amazon.
Learn more about the book below 👇
blogenigmath.wordpress.com/2025/10/19/m...
#math #geometry #puzzle #book #MasteringGeometryPuzzles #booksky
“A marveilous newtrality have these things mathematicall and also a strange participation between things supernaturall, imortall, intellectuall, simple and indivisible, and things naturall, mortall, sensible, compounded and divisible.”
John Dee
– English mathematician
#enigmath #math #quote
John Dee
– English mathematician
#enigmath #math #quote
November 9, 2025 at 6:54 AM
Great dodecahedron
Polyhedron with twelve pentagonal faces with five pentagons meeting at each vertex, intersecting each other making a pentagrammic path.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/07/g...
#enigmath #math #polyhedron
Polyhedron with twelve pentagonal faces with five pentagons meeting at each vertex, intersecting each other making a pentagrammic path.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/07/g...
#enigmath #math #polyhedron
November 7, 2025 at 6:49 AM
Great dodecahedron
Polyhedron with twelve pentagonal faces with five pentagons meeting at each vertex, intersecting each other making a pentagrammic path.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/07/g...
#enigmath #math #polyhedron
Polyhedron with twelve pentagonal faces with five pentagons meeting at each vertex, intersecting each other making a pentagrammic path.
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/07/g...
#enigmath #math #polyhedron
Pentagonal tiling 9
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/06/p...
#enigmath #math #tiling
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/06/p...
#enigmath #math #tiling
November 6, 2025 at 7:20 AM
Pentagonal tiling 9
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/06/p...
#enigmath #math #tiling
Learn more about it 👇
blogenigmath.wordpress.com/2025/11/06/p...
#enigmath #math #tiling
Lars Ahlfors
Finish mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/05/l...
#enigmath #math #mathematician
Finish mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/05/l...
#enigmath #math #mathematician
November 5, 2025 at 7:59 AM
Lars Ahlfors
Finish mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/05/l...
#enigmath #math #mathematician
Finish mathematician.
Learn more about him 👇
blogenigmath.wordpress.com/2025/11/05/l...
#enigmath #math #mathematician