Lumur rasional
[[Fail:Number-systems_(NZQRC).svg|thumb|Lumur rasional {{Tmath|\Q}} disengkaum dalam lumur bendar {{Tmath|\R}}, ke disengkaum lumur kompleks {{Tmath|\C}}, seraya lumur rasional mega nyengkaum [[integer]] {{Tmath|\Z}}, ti mega nyengkaum [[lumur natural]] {{Tmath|\N}}.]]

Dalam [[matematik]], '''lumur rasional''' nya [[lumur]] ti tau dipadahka nyadi quotient tauka pemechah {{Tmath|\tfrac p q}} ari dua iti [[integer]], siti [[numerator]] {{Mvar|p}} enggau siti [[denominator]] ukai-kusung {{Mvar|q}}.<ref name="Rosen">{{Cite book |last = Rosen |first=Kenneth |title=Discrete Mathematics and its Applications |year=2007 |edition=6th |publisher=McGraw-Hill |location=New York, NY|isbn=978-0-07-288008-3 |pages=105, 158–160}}</ref> Ngambika chunto, {{Tmath|\tfrac{3}{7} }} nya lumur rasional baka semua integer (cth., {{Nobr|<math>-5 = \tfrac{-5}{1}</math>).}} [[Set (matematik)|Set]] semua lumur rasional, dikelala mega enggau nama<ref>{{Cite book |title=Elements of Pure and Applied Mathematics |edition=illustrated |first1=Harry |last1=Lass |publisher=Courier Corporation |year=2009 |isbn=978-0-486-47186-0 |page=382 |url=https://books.google.com/books?id=WAY_AwAAQBAJ}} [https://books.google.com/books?id=WAY_AwAAQBAJ&pg=PA382 Extract of page 382]</ref> '''midan rasional'''<ref>{{Cite book |title=The Collected Works of Julia Robinson |first1=Julia |last1=Robinson |publisher=American Mathematical Soc |year=1996 |isbn=978-0-8218-0575-6 |page=104 |url=https://books.google.com/books?id=_33D84OENIAC}} [https://books.google.com/books?id=_33D84OENIAC&pg=PA104 Extract of page 104]</ref> tauka '''midan lumur rasional''' suah ditanda enggau lambang {{Math|'''Q'''}}, tauka urup tebal papan chelum {{Tmath|\Q.}}.

== Penerang ==
Dalam matematik, lumur rasional nya lumur ti tau dipadahka nyadi quotient tauka pemechah  ari dua iti integer, siti numerator  enggau siti denominator ukai-kusung . Ngambika chunto,  nya lumur rasional baka semua integer (cth.,  Set semua lumur rasional, dikelala mega enggau nama Extract of page 382 midan rasional Extract of page 104 tauka midan lumur rasional suah ditanda enggau lambang , tauka urup tebal papan chelum .

 Penerang