User:Ling Kah Jai

I am a Malaysian Chinese born in Sibu, Sarawak state of Malaysia. I work in Kuching, which is in the same state, as a civil and structural consulting engineer. Kuching is a small beautiful city with lots of trees and landscape along the streets. My interests are computer, programming, engineering, mathematics and physics.

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Frequent use

 * Help:Displaying a formula
 * Portal:Mathematics
 * WikiProject Mathematics
 * WikiProject Mathematics/Wikipedia 1.0/Frequently viewed/List
 * WikiProject Mathematics/Current activity
 * Pages needing attention/Mathematics
 * Template messages
 * Template_messages/Cleanup
 * Template_messages/Splitting
 * Template:Subarticle
 * Article_size
 * Splitting
 * Summary_style
 * Category:Main topic classifications
 * My user page at commons:User:Ling Kah Jai

My contribution

 * Euler spiral (more or less single-handed).
 * Transposable integer (more or less single-handed).
 * Last stone game, which was merged by some user to Nim.
 * Proofs of Fermat's little theorem
 * Half of Repeating decimal that includes:


 * Fractions with prime denominators
 * Reciprocals of composite integers
 * Reciprocals of integers not co-prime to 10


 * My previous version of Repeating decimal:
 * http://en.wikipedia.org/w/index.php?title=Repeating_decimal&oldid=290277404
 * that includes:
 * Explanation of cyclic behavior
 * Arithmetic proof of divisibility
 * Connection with Fermat's little theorem
 * and the last updated version (20 October 2009) before simplification by others:
 * http://en.wikipedia.org/w/index.php?title=Repeating_decimal&oldid=320979464


 * My previous version of Midy's theorem:
 * http://en.wikipedia.org/w/index.php?title=Midy%27s_theorem&oldid=320154070
 * Also see User:Ling Kah Jai/Midy's theorem


 * Chinese mathematics
 * Chinese astronomy
 * Timeline of Chinese astronomy
 * Soil mechanics
 * Other mathematical subjects.


 * My edition of Parasitic number (with added section):
 * http://en.wikipedia.org/w/index.php?title=Parasitic_number&oldid=309072561

My subpages

 * Wikipedia list of all my subpages
 * /Midy's theorem
 * /Greek alphabet

How to delete a subpage
See Guide to deletion: Edit the page putting at the top of the page. Such a reason might be, "subpage I created in error" or "subpage I created is no longer required".