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å³ïŒNâ¡1ïŒmod4ïŒïŒã®å¥æ°Nãè¡šããã«ãã«ãŒãééã®å·Šå¢çã¯ãå°ããæ¹ã®sçªç®ã®åè·¯ ïŒsïŒ=ïŒ2sïŒ 2ã®å³ååã®å·Šå¢çãšäžèŽããNã®ééã®å³å¢çã¯çªå·fã®å€§ãã茪éã®å³å¢çãã€ãŸã R n ïŒfïŒ=ïŒ2f + 1ïŒ 2 ã åãå ¥ããããæå®ã¯ããããã°ããŸãããæå³çã«æ£åœåãããç解ãšèšæ¶ã«äŸ¿å©ã§ãã
èªç¶ãªå¥æ°ã®åææ°Nã®çªå·ä»ãã¢ãã«ã®ä»¥åã®äœæ¥ïŒ ãã ïŒã§ãã€ãŸã å¶éåè·¯ã®ååã§ã¯ã茪éã®é·ãããk d / 2 +Σt i k iã®åœ¢åŒã®æ°å€ã«åãæ¿ããŠãæ°å€ã®åèšãååŸããŸããããã§ãt = m-1ãi = 1ïŒ1ïŒtã§ãã
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蚌æïŒèªç¶ãªå¥æ°ã®å³N pãšå·ŠN lã®åææ°ã«å¯ŸããŠå¥ã ã«å®è¡ããŸãã 蚌æã®èãæ¹ã¯æ¬¡ã®ãšããã§ãã äžæ¹ã§ã¯ãæ°Nã¯ãæãäžè¬çãªåœ¢åŒã®å¹³æ¹å·®ïŒåºéã®å¢çç¹ïŒãšããŠè¡šãããããšã瀺ãããŠããŸãã äžæ¹ãçé«ç·ãšååè·¯ã®æ°ã®åèšãèšç®ãããŸããããã¯ãåææ°N = N pãŸãã¯N = N lã®éççé«ç·ã®æ°ã®ååã«çããããããšã«ããããã®åŸã®å¢çã®å€æãæ°Nã«çããåèšã®æ¥µå€èŠçŽ ã®å¢çç¹ã®å·®ãæžãããŸãã
æ£ããæ°N = N pããå§ããŸãã çªå·ä»ãã¢ãã«ã®åèšã®å¥æ°ã®åææ°ã®ã¢ãã«ã§ä»¥åã«å°å ¥ããã極端ãªèŒªéã®æ°ãè¡šèšæ³sãšfã«çœ®ãæããŸãã [2ãpã160]ã«ããNRFã»ã°ã¡ã³ãã®èŠçŽ ã®åèšã®åŒã䜿çšããŸãã
s / 2 +ïŒs + 1ïŒ+ïŒs + 2ïŒ+ ... + f => 1/2ïŒf + s +1ïŒïŒfs-1 + 1ïŒ+ s / 2 => 1/2ïŒ f 2 + sf + f -sf -s 2 -sïŒ+ s / 2 = 1/2ïŒf 2 + fs 2 ïŒã
æçµåŒããåŠç¿ããæ°N pã®åºéã®å¢çã®å·®ã«å¯Ÿå¿ãã圢åŒãã€ãŸãïŒ2f + 1ïŒ 2- ïŒ2sïŒ 2ã«å€æããŸãã ããã¯ãèŠã€ãã£ãåŒãæ°N pã®å¶é茪éã®æ°ã®ååãã€ãŸãk p ïŒNïŒ/ 2 =ïŒN p -1ïŒ/ 8 = 1/2ïŒf 2 + fs 2 ïŒãšåçã«ããããšã§å®çŸãããŸãã
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s +ïŒs + 1ïŒ+ïŒs + 2ïŒ+ ... +ïŒf-1ïŒ+ f / 2 => 1/2ïŒf-1 + sïŒïŒfsïŒ+ f / 2 => 1/2 ïŒf 2 + sf-f-sf-s 2 + sïŒ+ f / 2 = 1/2ïŒf 2 -s 2 + sïŒ
æçµåŒã®å€æãå®è¡ãã調æ»ããæ°N = N lã®å¢çã®å·®ã®åœ¢åŒãã€ãŸãïŒ2fïŒ 2- ïŒ2s-1ïŒ 2ã®åœ¢åŒã«å€æããŸãã ããã¯ãèŠã€ãã£ãåŒããæ°å€N lã®æ¥µé茪éã®æ°ã®ååãã€ãŸãk p ïŒNïŒ/ 2 =ïŒN l + 1ïŒ/ 8 = 1/2ïŒf 2 + s-s 2 ïŒãšåçã«ããããšã§å®çŸãããŸãã
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å®ç2 ïŒè€åå¥æ°ã®äžå€éãå€ãã®ééïŒã äžå®ã®é·ãNãšçŸåšã®æ°å€i = 1ïŒ1ïŒ...ãæã€ãã¹ãŠã®ãã«ãã³ã³ã¿ãŒééã¯ãæ°å€è»žã®ç°ãªãé åã«ããè€åå¥æ°èªç¶æ°Nãè¡šããç°ãªãããªãã£ã®èªç¶æ°ã®æ£æ¹åœ¢ãå¢çãšããŠãé ã®ç°ãªãæ°m iã®åèšã«å¯Ÿå¿ããŸãïŒæ°k ijã® ïŒé£ç¶ããŠæ¬¡ã ãšç¶ã茪éïŒk ij +1 = k iïŒj + 1ïŒ ïŒãšãåèšã®å€ãäžå®ã§æ°Nã®ã¿ã«äŸåãããããª1ã€ã®æ¥µç«¯ãªå茪é
k di / 2 +Σt j k ij = k p ïŒNïŒ/ 2ãããã§t = m i -1ãj = 1ïŒ1ïŒtãi = 1ïŒ1ïŒ...
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-5çªç®ã«ãç°ãªãéã®ãã¹ãŠã®é ïŒæ¥µç«¯ãªåã«ãŒãæ°ãé€ãïŒã¯NRFã»ã°ã¡ã³ããè¡šããå°ããªé ãã次ã®å€§ããªé ãžãšå調ã«å¢å ããŸãïŒk ij +1 = k iïŒj + 1ïŒ ïŒã
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äŸ1 SNCH N = N l = 231ã®å Žåãå³åŽã®æ¥µç«¯ãªååè·¯ã æ°å€231ã¯ãå¶é茪éã®æ°k p ïŒN = 231ïŒ= 58ã«å¯Ÿå¿ããŸããsncã®fäžå€éã¯k p ïŒNïŒ/ 2 = 29ã§ãã å¶éã«ãŒãæ°ã®ååã fäžå€éã®éšåã®å¶éã«åŸã£ãŠã29çªã®ããŒãã£ã·ã§ã³ã圢æããå¿ èŠããããŸãã
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29 = 3 + 4 + 5 + 6 + 7 + 8/2;
29 = 7 + 8 + 9 + 10/2;
29 = 19 + 20/2ã
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-æåã®ããŒãã£ã·ã§ã³ã®å ŽåãN = 8â¢3 + 8â¢4 + 8â¢5 + 8â¢6 + 8â¢7 + 8â¢8/2 -1 = 24 +32 +40 +48 +56 +32 -1 = 231;
-2çªç®ã®ããŒãã£ã·ã§ã³ã®å ŽåãN = 8â¢7 + 8â¢8 + 8â¢9 + 8â¢10/2-1 = 56 + 64 + 72 + 40-1 = 231;
-3çªç®ã®ããŒãã£ã·ã§ã³ã®å ŽåãN = 8â¢19 + 8â¢20/2-1 = 152 + 80-1 = 231ã
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æåã®ééã§ã¯ã29 = 3 + 4 + 5 + 6 + 7 + 8/2ã«ãªããŸãã G p1 ïŒ8/2ïŒ=ïŒ2â¢8ïŒ 2 = 256; 1 ïŒ3ïŒ=ïŒ2â¢3-1ïŒ 2 = 25; ããã³ ïŒi = 1ïŒ - ïŒi = 1ïŒ=ïŒ16ïŒ 2- ïŒ5ïŒ 2 = 256-25 = 231 =ïŒ16 + 5ïŒïŒ16-5ïŒ= 21â¢11 = 231
2çªç®ã®ééã§ã¯ã29 = 7 + 8 + 9 + 10/2ã§ãã G n2 ïŒ10/2ïŒ=ïŒ2â¢10ïŒ 2 = 400; 2 ïŒ7ïŒ=ïŒ2⢠7-1 ïŒ 2 = 169; ããã³ ïŒi = 2ïŒ - ïŒi = 2ïŒ=ïŒ20ïŒ 2- ïŒ13ïŒ 2 = 400-169 = 231 =ïŒ20 + 13ïŒïŒ20-13ïŒ= 33â¢7 = 231
3çªç®ã®ééã§ã¯ã29 = 19 + 20/2ã§ãã G p3 ïŒ20/2ïŒ=ïŒ2â¢20ïŒ 2 = 1600; 3 ïŒ19ïŒ=ïŒ2⢠19-1 ïŒ 2 = 1369; ïŒi = 3ïŒ - ïŒi = 3ïŒ=ïŒ40ïŒ 2- ïŒ37ïŒ 2 = 1600-1369 = 231 =ïŒ40 + 37ïŒïŒ40-37ïŒ= 77â¢3 = 231 ã
1ã€ã®snc Nã®3ã€ã®åºéã®ããããã«å¢çïŒæ£æ¹åœ¢ã®ãã¢ïŒããããããNã®ç°ãªãå æ°å解ãç°¡åã«ååŸã§ããŸãã
ããŒããŒã®ãããã1ã€ã®ééããããŸã-æ£æ¹åœ¢ããã®éã«è€åå¥æ°N = 231ããããŸãããã®ããŒããŒ-çªå·231ã®éç茪éã®å¢çã¯éåžžã«åçŽã§ãïŒå·Š4 ïŒk = 58ïŒ=ïŒïŒ 231-1 ïŒ/ 2ïŒ 2 =ïŒ115ïŒ 2 = 13225ãå³4 ïŒk = 58ïŒ=ïŒïŒ231 + 1ïŒ/ 2ïŒ 2 =ïŒ116ïŒ 2 = 13456ãå¶éåè·¯ã®ååè·¯ééã®é·ãã¯
N = 4 ïŒk = 58ïŒ -4 ïŒk = 58ïŒ=ïŒïŒ231 + 1ïŒ/ 2ïŒ 2 -ïŒïŒ231-1ïŒ/ 2ïŒ 2 =ïŒ116ïŒ 2- ïŒ115ïŒ 2 = 13456-13225 = 231ã
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[1] Vaulin A.E.ãPilkevich S.V. ãèªç¶æ°åã®åºæ¬æ§é ã-ã€ã³ããªãžã§ã³ãã·ã¹ãã ã 第7ååœéã·ã³ããžãŠã ã®è°äºé²ã ãšãã K.A. Pupkovaã-M .: RUSAKIã2006.-pã384-387
[2] Bronstein I.N.ãSemendyaev K.A. VTUZ._Mã®ãšã³ãžãã¢ããã³åŠçåãæ°åŠãã³ãããã¯ïŒGITTLã1954ã-608s
[3] Hall M. Combinatoricsã -MãïŒããŒã«ã1970 .-- 424 pã
[4] Andrews G.ããŒãã£ã·ã§ã³çè«ã -MãïŒScience GRFMLã1982幎ã -256ç§