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Basal metabolic rate calculation.
cross-posted from: https://lemmy.today/post/9963785
> Hi, > > I've found on Wikipedia the following formula to calculate the BMR estimation > > ! > > We can read just after the formula: > > According to this formula, the woman in the example above has a BMR of 1,204 kilocalories (5,040 kJ) per day. > > But when I take their example of > a 55-year-old woman weighing 130 pounds (59 kg) and 66 inches (170 cm) > > and do >
((10*55)+(6,25*170)-(5*55))-161
I get 1,217 and not 1,204 > > Am I doing something wrong ? > > Thanks. -
A curious math problem I came up with: given a target, what's the fewest digits an integer must have (in a given base) to contain all integers from 0 to the target, as substrings?
A curious math problem I came up with: given a target, what's the fewest digits an integer must have (in a given base) to contain all integers from 0 to the target, as substrings?
http://wok.oblomov.eu/mathesis/number-substrings/
@mathematics @[email protected] @[email protected]
e.g. for a target of 19 a candidate representative would be 1011213141516171819 in base 10, that has 19 digits. Can it be done in less, or is $\\sigma\_10(19) = 19$? Can we find a general rule? Any properties of this function?
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Geometric Shapes and Their Symbolic Meanings
Geometric Shapes and Their Symbolic Meanings
https://www.learnreligions.com/geometric-shapes-4086370
Forms ranging from circles to dodekagrams have significance in many philosophies
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Merging Fields, Mathematicians Go the Distance on Old Problem
Merging Fields, Mathematicians Go the Distance on Old Problem
Mathematicians have illuminated what sets of points can look like if the distances between them are all whole numbers.
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Mathematics Ancient Egypt, The Incredible Achievements
Mathematics Ancient Egypt, The Incredible Achievements
https://mythologis.com/blogs/egyptian-mythology/mathematics-ancient-egypt
The #ancientEgyptians were known for their advanced understanding of #mathematics and its many practical uses. From the construction of the iconic #pyramids to their use of algebraic techniques to solve problems, the ancient Egyptians were masters of the mathematical arts.
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How the number pi inspired a writing style
How the number pi inspired a writing style
https://www.bbc.com/future/article/20160311-how-the-number-pi-inspired-a-writing-style
The number pi, which is celebrated with its own day on 14 March, has inspired “Pilish” – a fiendishly challenging form of writing. There’s even a Pilish novel. Give it a go yourself, it can be strangely addictive...
\#pilish #pi #pigreco #mathematics #writing #poetry @[email protected] @[email protected]
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Topologists Tackle the Trouble With Poll Placement
Topologists Tackle the Trouble With Poll Placement
https://www.quantamagazine.org/topologists-tackle-the-trouble-with-poll-placement-20240326/
Mathematicians are using topological abstractions to find places where it’s hard to vote.
\#topology #mathematics @[email protected] @[email protected]
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Mathematician who tamed randomness wins Abel Prize
Mathematician who tamed randomness wins Abel Prize
https://www.nature.com/articles/d41586-024-00839-6
\#MichelTalagrand laid mathematical groundwork that has allowed others to tackle problems involving random processes.
\#AbelPrize #mathematics @[email protected] @[email protected]
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Michel Talagrand's reaction to winning the 2024 Abel Prize
YouTube Video
Click to view this content.
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How the Fibonacci sequence can convert between Miles and Kilometers
It's an approximation but still... It's an interesting quick read.
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Full Berkeley Lectures on Group Theory
cross-posted from: https://slrpnk.net/post/3863820
> Institution: Berkeley > Lecturer: Richard E Borcherds > University Course Code: Math 250A > Subject: #math #grouptheory > Description: This is an experimental online course on mathematical group theory, corresponding to about the first third of the Berkeley course 250A (introductory graduate algebra). The level is for first year graduate students or advanced undergraduates. The topics covered are roughly the parts of group theory that a mathematician not specializing in groups might find useful.
More at [email protected]
- www.quantamagazine.org A Brief History of Tricky Mathematical Tiling | Quanta Magazine
The discovery earlier this year of the “hat” tile marked the culmination of hundreds of years of work into tiles and their symmetries.
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Y'all are dark magicians
Sometimes I'll feel like "yeah, I know some math, I can do integrals!", then watch some YouTube video from Micheal Penn about why there's no three dimensional complex numbers, and suddenly it's dark magic. I understand absolutely n o t h i n g. it's impressive, inspiring, depressing, overwhelming, all at the same time. There's no fancy words. It's all mundane words like set, algebra, etc. but they're strung together in arcane ways. it's more overwhelming because you understand the individual words but they're a whole other language when together.
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Who else loves the brilliant app
I hate paying for the app and I wish kahn academy had something like it.
Anyone else love this app. It's definitely helping me with looking at basic math in a new way. It's fun and I'll keep going.
What courses are you or have you taken?
Should we make a community?
Have another resource like brilliant? I know Khan Academy, but they are very much deep dives.
I'd really love to create a free resource like this app.
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Unicode 15 includes glyphs for a beautiful base-20 number system invented by Inuit school children in the 90s
www.scientificamerican.com A Number System Invented by Inuit Schoolchildren Will Make Its Silicon Valley DebutMath is called the “universal language,” but a unique dialect is being reborn
- www.nytimes.com Elusive ‘Einstein’ Solves a Longstanding Math Problem
And it all began with a hobbyist “messing about and experimenting with shapes.”
- johncarlosbaez.wordpress.com The Circle of Fifths
The circle of fifths is a beautiful thing, fundamental to music theory. Sound is vibrations in air. Start with some note on the piano. Then play another note that vibrates 3/2 times as fast. Do thi…
- www.nature.com Mathematician who solved prime-number riddle claims new breakthrough
After shocking the mathematics community with a major result in 2013, Yitang Zhang now says he has solved an analogue of the celebrated Riemann hypothesis.
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The weirdest paradox in statistics (and machine learning)
YouTube Video
Click to view this content.
- explained-from-first-principles.com Number theory explained from first principles
A lot of modern cryptography builds on insights from number theory, which has been studied for centuries.
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The Amazing Math Inside the Rubik’s Cube
www.popularmechanics.com To Solve the Rubik’s Cube, You Have to Understand the Amazing Math InsideWant to solve the puzzle? Then you have to know the numbers.
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How Isaac Newton Discovered the Binomial Power Series
www.quantamagazine.org How Isaac Newton Discovered the Binomial Power Series | Quanta MagazineRethinking questions and chasing patterns led Newton to find the connection between curves and infinite sums.
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Mathematicians Crack a Simple but Stubborn Class of Equations
www.quantamagazine.org Ancient Equations Offer New Look at Number Groups | Quanta MagazineEver since Archimedes, mathematicians have been fascinated by equations that involve a difference between squares. Now two mathematicians have proven how often these equations have solutions, concluding a decades-old quest.
- blogs.mathworks.com The Enigma Qube, Merging an Enigma Machine and a Rubik’s Cube
An Enigma Machine combined with a Rubik's Cube makes an encryption device with unprecedented power.ContentsRubik's CubeEnigma MachineEnigma QubeKeyboardRotorsPlugboardPowerRubik's CubeI have made several posts recently about various cubes, including the Rubik's Cube. Enigma MachineIn 2015, MathWorks...
- acko.net How to Fold a Julia Fractal
A tale of numbers that like to turn: a different look at complex numbers and the strange things they do.