# [seqfan] Re: Arabic Poetry Sequences

Neil Sloane njasloane at gmail.com
Thu Aug 29 14:33:27 CEST 2019

```My feeling is that these are not really appropriate for the OEIS.

Best regards
Neil

Neil J. A. Sloane, President, OEIS Foundation.
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
Email: njasloane at gmail.com

On Thu, Aug 29, 2019 at 5:06 AM Ali Sada via SeqFan <seqfan at list.seqfan.eu>
wrote:

>  Hi Antti,
> Thank you for your response. Yes, I meant the sequences at the end of the
> email. I put them here again in OEIS format. And yes, they are periodic.
> The poem can go up to hundreds of verses, and each one is with the same
> format.
> I have no idea if there is any mathematical interest in them. As far as I
> know, I might be the first one to replace the "/" and the "o" with "1" and
> "0", respectively. This system could be used in cryptography, for
> example.Also, it might be interesting to compare these rhythms with rhythms
> from other cultures, like Farsi poetry as you mentioned. Maybe someone can
> check English rhythms replacing C,V, #, etc. with numbers.
> In any case, this was just a suggestion.
> Best,
> Ali
>
> 1.      Al-Taweel-The Long
>
>
>
>
> 1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0
>
>
>
>
>
>
>
> 1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0
>
>
>
> 1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0
>
>
>
>
> 1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0
>
>
>
> 3.      Al-Baseet-Plain
>
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0
>
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,1,1,0
>
>
>
> 4.      Al-Wafer- The Abundant
>
>
>
>
> 1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,0,1,1,0,1,0
>
>
>
> 1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,0
>
>
>
> 5.      Al-Kamel-The Perfect
>
>
>
>
> 1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0
>
>
>
> 6.      Al-Hazaj- The Lilt
>
>
>
>
> 1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0
>
> 1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0
>
>
>
>
>
> 7.      Al-Rajaz- The Wind Vibration
>
>
>
>
> 1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0
>
>
>
> 1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0
>
>
>
>
>
>
>
> 8.      Al-Raml- The Sand
>
>
>
>
> 1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0
>
>
>
> 9.      Al-Saree’-The Fast
>
>
>
> 1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0
>
>
>
> 10.  Al-Munsareh- TheSloping (water goes down on aslope)
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,1,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,1,1,0
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1
>
>
>
> 11.  Al-Khafif- The Light(light weight)
>
>
>
>
> 1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0
>
>
>
>
>
> 12.  Al-Mudhare’- TheSimilar
>
>
>
>
> 1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0
>
>
>
> 1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0
>
>
>
>
>
>
>
> 1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0
>
>
>
> 1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0
>
>
>
> 14.  Al-Mujtath- TheDeducted
>
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,1,0,1,0
>
>
>
> 1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,1,0
>
>
>
> 15.  Al-Mutaqareb- TheConverged
>
>
>
>
> 1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0
>
>
>
>
> 1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0
>
>
>
> 16.  Al-Khabab- The Trot
>
>
>
> 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0
>
>
>
> 1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0
>
>
>
>
>
>
>     On Wednesday, August 28, 2019, 2:25:58 PM EDT, Antti Karttunen <
> antti.karttunen at gmail.com> wrote:
>
>  On 8/25/19, Ali Sada via SeqFan <seqfan at list.seqfan.eu> wrote:
> >
> > Hi Everyone,
> >
> >
> >
> > Please see below the "sequences" of classic Arabic poetry. Do you think
> they
> > should be added to OEIS?
> >
>
> Do you mean those 0/1-sequences at the end of your mail? Should they
> be finite or periodic? Is there any specific mathematical interest in
> them?
>
> >
> >
> > Best,
> >
> >
> >
> > Ali
> >
> >
> > The "sequences" (called “buhour,” Arabic for “seas.”) were discovered in
> the
> > 8th century by the great Iraqi scholar Al-Khalil ibn Ahmad Al-Farahidi,
> who
> > was a linguist, philologist,cryptographer, lexicographer, musician, and
> > grammarian.
>
> Knuth in his Vol. 4A, chapter "History of Combinatorial Generation")
> who investigated Sanskrit prosody.
>
> I don't myself know much about Arabic poetry, but I like many Persian
>
>
> Best regards,
>
> Antti
>
>
> >
> >
> >
> > The bahar (sea) has one main sequence. Sometimes these sequences get
> > replaced by "lighter" versions.
> >
> >
> >
> > Each Arab poem consists of few to hundreds of verses. The verse is called
> > bayt, which is Arabic for house. Each bayt could be written as a string
> of
> > “on” and “off” type of symbols. The “on” sign means “moving,”and the
> “off”
> > sign means “static.” The original signs used by Arabic scholars are “/”
> and
> > “o,” so it is perfectly logical to use 1 and 0 instead.
> >
> >
> >
> > There are 28 Arabic letters, 3 of them are long vowels (“ɑ” as in bath,
> “u”
> > as in moon, and “i” as in seen.) There are also 3 harakat (plural of
> haraka,
> > which means movement in Arabic.) These harakat are actually short vowels
> (“ɛ”
> > as in pet, “ʊ” as in put, and “ɪ” as in pit.)
> >
> >
> >
> > The structure of the Arabic rhythms is based on these three rules:
> >
> >
> >
> > i)                  A constant sound that is not associated with any
> vowel
> > sound is called“saken, which means static.) It is represented by a “0.”
> For
> > example, the “t”in the word “put” is static, and in poetry it is
> represented
> > by a “0.”
> >
> > ii)                  A constant sound that is associated with a short
> vowel
> > is considered one“moving” part. For example, the sound “p” and the sound
> “ʊ”
> > in the word “put”are considered one moving part. So, the representation
> of
> > the single word “put”is 10.
> >
> > iii)                A constant sound that is associated with a long
> vowel is
> > considered“moving,” and the long sound is considered static. So, the
> > representation ofthe word “pa” is 10.
> >
> >
> >
> >
> >
> > Examples:
> >
> > Paton= moving “p,” static “y,” moving “t,”and static “n.” 1010
> >
> > Josephine= moving “j,” static “o,” moving“z,” moving “f,” static “ee,”
> and
> > static “n.” 101100
> >
> > Wodroow Wilson eating pizza= 1010101010101010
> >
> >
> >
> > Arabic classic buhour are:
> >
> >
> >
> > 1.      Al-Taweel-The Long
> >
> > 1101011010101101011011011010110101011010110110
> >
> >
> >
> >
> > 101101010110101101010110101101010110101101010110
> >
> > 10110101011010110101011010101101011010
> >
> > 101101010110101011010101101010110101011010
> >
> >
> >
> >
> >
> > 3.      Al-Baseet-Plain
> >
> > 101011010110101011010110101011010110101011010110
> >
> > 10101101011010101101010110101101010110
> >
> > 1010110101101010110111010101101011010101101110
> >
> >
> >
> >
> >
> > 4.      Al-Wafer- The Abundant
> >
> > 110111011011101101011010110111011011101101011010
> >
> > 11011101101110110101101110110111011010
> >
> >
> >
> > 5.      Al-Kamel-The Perfect
> >
> > 111011011101101110110111011011101101110110
> >
> >
> >
> > 6.      Al-Hazaj- The Lilt
> >
> > 110101011010101101010110101011010101101010
> >
> > 1101010110101011010101101010
> >
> >
> >
> > 7.      Al-Rajaz- The Wind Vibration
> >
> > 101011010101101010110101011010101101010110
> >
> > 1010110101011010101101010110
> >
> >
> >
> > 8.      Al-Raml- The Sand
> >
> > 101101010110101011010101101010110101011010
> >
> >
> >
> >
> >
> > 9.      Al-Saree’-The Fast
> >
> > 10101101010110101101010110101011010110
> >
> >
> >
> >
> >
> > 10.  Al-Munsareh- TheSloping (water goes down on a slope)
> >
> > 10101101011011011101010110101101101110
> >
> > 10101101011011010110101101
> >
> >
> >
> >
> >
> > 11.  Al-Khafif- The Light(light weight)
> >
> > 101101010101101011010101101010101101011010
> >
> >
> >
> >
> >
> > 12.  Al-Mudhare’- TheSimilar
> >
> > 110101010110101101010110101010110101101010
> >
> > 1101010101101011010101011010
> >
> >
> >
> >
> >
> > 13.  Al-Muqtadhab- The Brief
> >
> > 101010110101101010110101010110101101010110
> >
> > 1010101101011010101011010110
> >
> >
> >
> > 14.  Al-Mujtath- TheDeducted
> >
> > 101011010110101011010101011010110101011010
> >
> > 1010110101101010101101011010
> >
> >
> >
> >
> >
> > 15.  Al-Mutaqareb- TheConverged
> >
> > 1101011010110101101011010110101101011010
> >
> > 1101011010110101101011010110101101011010
> >
> >
> >
> >
> >
> > 16.  Al-Khabab- The Trot
> >
> > 10101010101010101010101010101010
> >
> > 101101011010110101101011010110
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --
> > Seqfan Mailing list - http://list.seqfan.eu/
> >
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>

```