Difference between revisions of "ZCubes/Twin Primes & Bruns Theorem"

From ZCubes Wiki
Jump to navigation Jump to search
Line 10: Line 10:
 
==Code==
 
==Code==
  
<br/>PRIMES(1000)
+
PRIMES(1000)
<br/>--> displays first 1000 prime numbers
+
--> displays first 1000 prime numbers
  
<br/>ps=PRIMES(1000)
+
ps=PRIMES(1000)
<br/>.filter((x,i,d)=>d[i]-d[i-1]==2)
+
  .filter((x,i,d)=>d[i]-d[i-1]==2)
<br/>.$("[x-2,x]")
+
  .$("[x-2,x]")
<br/>--> above code filters the first 1000 primes to check if the difference between two prime numbers is '2' and displays the list of twin primes as (3 5), (5,7), (11,13) etc
+
--> above code filters the first 1000 primes to check if the difference between two prime numbers is '2' and displays the list of twin primes as (3 5), (5,7), (11,13) etc
 
This list is stored as a table named 'ps'. Using the below code statement, this table is further used to map it to the reciprocals of the twin primes and add them.
 
This list is stored as a table named 'ps'. Using the below code statement, this table is further used to map it to the reciprocals of the twin primes and add them.
  
  
ps.map(r=>1/r[0]+1/r[1])~
+
ps.map(r=>1/r[0]+1/r[1])~
  
  

Revision as of 03:52, 31 March 2020

Twin Primes & Bruns Theorem


Twin primes are prime numbers separated by 2. Viggo Bruns theorem states that sum of reciprocals of twin primes is convergent. This video demonstrates how to test this theorem, using ZCubes. You will observe that the computation is simple and easy in ZCubes, as it takes only 4 lines of code.

Video


Twin Primes & Bruns Theorem














Code

PRIMES(1000)

--> displays first 1000 prime numbers

ps=PRIMES(1000)
 .filter((x,i,d)=>d[i]-d[i-1]==2)
 .$("[x-2,x]")

--> above code filters the first 1000 primes to check if the difference between two prime numbers is '2' and displays the list of twin primes as (3 5), (5,7), (11,13) etc This list is stored as a table named 'ps'. Using the below code statement, this table is further used to map it to the reciprocals of the twin primes and add them.


ps.map(r=>1/r[0]+1/r[1])~


<< Learn ZCubes
© Copyright 1996-2020, ZCubes, Inc.