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2Â¥2014-10-23 09:07:01
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napoleon_999

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ÒýÓûØÌû:
2Â¥: Originally posted by Edstrayer at 2014-10-23 09:07:01
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S(k,m)=\frac{1}{2k+1}+\frac{1}{2k+3}+\cdots+\frac{1}{2k+2m+1}
½«2k+1,2k+3,\cdots,2k+2m+1¾ù·Ö½â³É±ê×¼·Ö½âʽ:
a(k,i)=2k+2i-1=\prod\limits_{j=1}^rp_j^{s_j^i}(i=1,2,\cdots,m+1)
͉˕p_1<p_2<\ ...

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3Â¥2014-10-23 11:22:44
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hank612

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ÒýÓûØÌû:
3Â¥: Originally posted by napoleon_999 at 2014-10-23 11:22:44
¿ÉÊÇÔõô±£Ö¤Ö»ÓÐÒ»¸öi0ÄÜʹPjµÄÃݴδﵽtÄØ£¬ÎÒ¾õµÃÕâËÆºõ²»Äܱ£Ö¤¡£
...

Use some big theorem to get there.
http://www.emis.de/journals/AMI/2007/ami2007-belbachir.pdf

Nagell's theorem, Kurschak's theorem, and Belbachir-Khelladi theorem based on the result of Shorey-Tijdeman.
We_must_know. We_will_know.
4Â¥2014-10-23 11:28:29
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hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
4Â¥: Originally posted by hank612 at 2014-10-23 11:28:29
Use some big theorem to get there.
http://www.emis.de/journals/AMI/2007/ami2007-belbachir.pdf

Nagell's theorem, Kurschak's theorem, and Belbachir-Khelladi theorem based on the result of Shorey-T ...

http://www.math.leidenuniv.nl/~tijdeman/shoreyt.pdf

If you are interested in the number theory, you may read the above portrait on Shorey.  The methods they approach problems are modern and deep.
We_must_know. We_will_know.
5Â¥2014-10-23 11:52:30
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hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
4Â¥: Originally posted by hank612 at 2014-10-23 11:28:29
Use some big theorem to get there.
http://www.emis.de/journals/AMI/2007/ami2007-belbachir.pdf

Nagell's theorem, Kurschak's theorem, and Belbachir-Khelladi theorem based on the result of Shorey-T ...

http://www.emis.de/journals/AMI/2007/ami2007-belbachir.pdf
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Theorem£¨Shorey-Tijdeman, 1990): Éè×ÔÈ»Êýa, d, k, ÆäÖÐ(a,d)=1»¥ËØ£¬. ¿¼ÂÇÁ¬³Ë»ýÖÐ×î´óµÄËØÒò×ÓP¡£
Ö»Òª d>1, ÄÇô¾ÍÓÐ ÆäÖУ¬P=kµ±ÇÒ½öµ±(x,d,k)=(2,7,3).

ÕâÒâζ×Å£¬ ÔڵȲîÊýÁÐ{a, a+d, a+2d,..., a+(k-1)d}Õâk¸öÊýÖУ¬ÓÐÇÒÖ»ÓÐÒ»¸öÄܱ»PÕû³ý¡£Õâ´ÓP|(a+id), P|(a+jd) ¿ÉÒÔÍÆ³öP|((j-i)d, (j-i)a)=(j-i). ¶ø¿´³ö¡£

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£¨3£©²»ÒªÐ¡¿´Õâ¸ö¼òµ¥µÄÒýÀí¡£ ËüÔ̺¬×Å£º
Theorem (Belbachir-Khelladi, 2007) Èç¹ûa,d,k ×ÔÈ»Êý£¬k>1,ÄÇô¶ÔÈÎÒâÕýÕûÊý´ÎÊý, µ¹ÊýºÍ¿Ï¶¨²»ÊÇÕûÊý¡£

Ö¤Ã÷£ºÉè(a,d)=q. È¡PΪµÈ²îÊýÁÐÁ¬³Ë»ýµÄ×î´óËØÒò×Ó¡£ Èç¹ûP|q, ÄÇôµ¹ÊýºÍ²»»áÊÇÕûÊý¡£ Èç¹ûP²»Õû³ýq, ÄÇP¾ÍÊÇÒýÀíÖÐʹµÃµ¹ÊýºÍ·ÇÕûÊýµÄÒìÀà¡£
Èç¹ûÄã×Ðϸ¶Á Shorey-Tijdeman¶¨Àí£¬ ¾Í»áÎÊ£ºd=1Ôõô°ì£¿ Á¹°è¡£ ÒòΪ¸ù¾ÝChebyshevÖ¤Ã÷µÄBertrand ¼ÙÉ裺ÔÚnºÍ2nÖ®¼ä±ØÓÐÒ»¸öËØÊý¡£
ÄÇô¿¼ÂDz»³¬¹ýnµÄ×î´óµÄÄÇÃ´ËØÊýQ¡£ »áÓÐ Q<= n <2Q, ´Ó¶ø Q ²»Õû³ý1£¬2£¬3£¬..., n ÖгýÁËQ×Ô¼ºÒÔÍâµÄÈÎÒâÒ»¸öÊý£¬ Õâ¸öQÓÖ°çÑÝÁËÒìÀàµÄ½ÇÉ«¡£

(4)ÒÔ϶¨Àí¶¼±ä³ÉÁËÍÆÂÛ£º
Nagell ¶¨Àí£º ¾ø·ÇÕûÊý¡£

Kurschak ¶¨Àí1918£º ¾ø·ÇÕûÊý¡£

Taeisinger ¶¨Àí1915£º ¾ø·ÇÕûÊý¡£
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6Â¥2014-10-31 11:01:03
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7Â¥2016-11-13 13:34:23
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978470969

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ÒýÓûØÌû:
6Â¥: Originally posted by hank612 at 2014-10-31 11:01:03
http://www.emis.de/journals/AMI/2007/ami2007-belbachir.pdf
¿ÉÄÜ´ó¼Ò¶ÔÕâ¸ö·½Ïò²»Ê죬ÎÒÀ´°ËØÔһϡ£

£¨1£©ÎÒÃÇ´Ó Shorey-Tijdeman¶¨ÀíÈëÊÖ£º
Theorem£¨Shorey-Tijdeman, 1990): Éè×ÔÈ»Êýa, d, k, ÆäÖÐ(a, ...

ÇëÎÊÄÜ·¢Ò»ÏÂShorey-Tijdeman¶¨ÀíµÄÖ¤Ã÷Á´½ÓÂð£¿ÎÒÔÚÍøÉÏÕÒ²»µ½Ö¤Ã÷Õâ¸ö¶¨ÀíµÄÂÛÎÄT.N.Shorey and R.Tijdeman,On the greatest prime factor of an arithmetical progession,to appear.
8Â¥2017-04-12 17:46:22
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