Quick Calculations by Shi Fengshou in English?

Carpenter T
Messages
4
Reaction score
0
"Quick Calculations" by Shi Fengshou in English?

I'm looking for an English manual to "Shi Fengshou Rapid Calculations." Apparently the guy wrote a book in Chinese sometime between 1970 and 1980 called "Quick Calculations." However, I haven't been able to find an English translation of it. I would settle for any book about his "rapid calculation" formulas, but I haven't been able to find any in English. At his website they describe the basics of his methods:

shifengshou.com

Can anyone recommend a book with even the same ideas? I think this guy is supposed to be the original "human calculator," and if I'm going to invest time in learning a system, I want to learn the best.
 
Mathematics news on Phys.org
I believe it has something to do with an abacus, or something similar. I think a few countries have a competition for kids where they do large arithmetic operations with abaci. There are some people that were so proficient at it they can picture an abacus in their mind and do large calculations that way.

But I mean what's the point? We have calculators
 
Last edited:
Feldoh said:
But I mean what's the point?

Bragging rights, like most things in life.
 
Werg22 said:
Bragging rights, like most things in life.

Or: Just plain fun:)

Isn't this suppose to be a math forum? Am I the only one here who would find satisfaction in knowing I could do this stuff in my head? I'm only 29, but you guys are already making me feel old.

Besides, with all the competition in carpentry, for a carpenter this kind of thing could make the difference between a pay raise or even a job. Every edge helps.
 
Well If i ever get stranded on an island with no working paper, I will gladly drown. If I have working paper, Ill do everything by hand if I have to, stuff your abacus, schmabacus. I don't see how quick calculations will help in Carpentry by the way...
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...
Thread 'Imaginary Pythagorus'
I posted this in the Lame Math thread, but it's got me thinking. Is there any validity to this? Or is it really just a mathematical trick? Naively, I see that i2 + plus 12 does equal zero2. But does this have a meaning? I know one can treat the imaginary number line as just another axis like the reals, but does that mean this does represent a triangle in the complex plane with a hypotenuse of length zero? Ibix offered a rendering of the diagram using what I assume is matrix* notation...

Similar threads

  • Sticky
Replies
0
Views
4K
Replies
2
Views
5K
Replies
2
Views
470
Replies
3
Views
3K
Replies
4
Views
5K
Back
Top