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'''1''' was a [[prime number]]. ([[AUDIO]]: ''[[The Haunting (audio story)|The Haunting]]'')
{{dab page|One}}
'''1''' was a [[prime number]]. ([[AUDIO]]: {{cs|The Haunting (audio story)}})


According to the [[Tenth Doctor]], "any number that reduce[d] to 1 when you [took] the [[sum]] of the [[square (algebra)|square]] of its [[digit]]s and continue[d] iterating it until it yield[ed] 1" was a [[happy number]]. ([[TV]]: ''[[42 (TV story)|42]]'')
According to the [[Tenth Doctor]], "any number that reduce[d] to 1 when you [took] the [[sum]] of the [[square (algebra)|square]] of its [[digit]]s and continue[d] iterating it until it yield[ed] 1" was a [[happy number]]. ([[TV]]: {{cs|42 (TV story)}})


[[File:Calculus demonstration 1.jpg|thumb|Part of the [[Mathematical proof|demonstration]] made by the [[Twelfth Doctor]]. ([[TV]]: ''[[The Pilot (TV story)|The Pilot]]'')]]
[[File:Calculus demonstration 1.jpg|thumb|Part of the [[Mathematical proof|demonstration]] made by the [[Twelfth Doctor]]. ([[TV]]: {{cs|The Pilot (TV story)}})]]
The [[Twelfth Doctor]] once [[Mathematics|proved]] that <math>\lim_{\theta\to 0} \frac {sin \theta} {\theta} = 1</math>. ([[TV]]: ''[[The Pilot (TV story)|The Pilot]]'')
The [[Twelfth Doctor]] once [[Mathematics|proved]] that <math>\lim_{\theta\to 0} \frac {sin \theta} {\theta} = 1</math>. ([[TV]]: {{cs|The Pilot (TV story)}})


[[Block Transfer Computation]] made use of 1s and [[0 (number)|0s]], as it was written in [[binary]]. ([[AUDIO]]: ''[[The Enchantress of Numbers (audio story)|The Enchantress of Numbers]]'')
[[Block Transfer Computation]] made use of 1s and [[0 (number)|0s]], as it was written in [[binary]]. ([[AUDIO]]: {{cs|The Enchantress of Numbers (audio story)}})


According to the [[Second Doctor]], a one in [[13 (number)|13]] chance was about [[7.6923 (number)|7.6923]] [[percentage|percent]], [[odds]] he didn't like. ([[COMIC]]: ''[[Card Conundrum (comic story)|Card Conundrum]]'')
According to the [[Second Doctor]], a one in [[13 (number)|13]] chance was about [[7.6923 (number)|7.6923]] [[percentage|percent]], [[odds]] he didn't like. ([[COMIC]]: {{cs|Card Conundrum (comic story)}})


The [[Tenth Doctor]] believed that [[Dalek Caan]], who had emerged as the last of the [[Cult of Skaro]], was the one remaining [[Dalek]] in "[[the universe|the whole universe]]". ([[TV]]: ''[[Evolution of the Daleks (TV story)|Evolution of the Daleks]]'')
The [[Fourth Doctor]] described [[Streets Doctor Who Ice Cream (in-universe)|Streets ''Doctor Who'' Ice Cream]] as "the first ''[[Doctor Who (in-universe)|Doctor Who]]'' [[ice]] [[treat]]. ([[TV]]: {{cs|Streets Doctor Who advertisement (TV story)}})


The Twelfth Doctor once told [[Bill Potts|Bill]] that "[[11 (number)|eleven]] [[addition|plus]] [[2 (number)|two]]" was an [[anagram]] of "[[12 (number)|twelve]] plus one", to which Bill responded that both of these were equal to [[13 (number)|13]]. ([[COMIC]]: ''[[Harvest of the Daleks (comic story)|Harvest of the Daleks]]'')
The [[Tenth Doctor]] believed that [[Dalek Caan]], who had emerged as the last of the [[Cult of Skaro]], was the one remaining [[Dalek]] in "[[the universe|the whole universe]]". ([[TV]]: {{cs|Evolution of the Daleks (TV story)}})


[[British Summertime]] began in early [[2005]] on a [[Sunday]] [[morning]] at 01:00[[A.M.|am]] when [[Daylight savings|went forwards]]. ([[PROSE]]: ''[[The Clocks Go Forward (short story)|The Clocks Go Forward]]'')
The Twelfth Doctor once told [[Bill Potts|Bill]] that "[[11 (number)|eleven]] [[addition|plus]] [[2 (number)|two]]" was an [[anagram]] of "[[12 (number)|twelve]] plus one", to which Bill responded that both of these were equal to [[13 (number)|13]]. ([[COMIC]]: {{cs|Harvest of the Daleks (comic story)}})
 
[[British Summertime]] began in early [[2005]] on a [[Sunday]] [[morning]] at 01:00[[A.M.|am]] when [[Daylight savings|the clocks went forwards]]. ([[PROSE]]: {{cs|The Clocks Go Forward (short story)}})
 
The [[countdown]] towards the [[Ninth Doctor]]'s [[eviction]] on ''[[Big Brother]]'' [[Counting|counted]] from [[6 (number)|6]] to 0, going through [[5 (number)|5]], [[4 (number)|4]], [[3 (number)|3]], [[2 (number)|2]], and 1. ([[TV]]: {{cs|Bad Wolf (TV story)}})
[[File:1 finger.jpg|left|thumb|The [[Thirteenth Doctor]] holds up 1 [[finger]] in reference to the [[number]], '1'. ([[WC]]: {{cs|Message from the Doctor (webcast)}})]]
In an [[Emergency transmission (Message from the Doctor)|emergency transmission]] sent by [[The Doctor's TARDIS|the TARDIS]], the [[Thirteenth Doctor]] listed 5 things that she did in any worrying [[situation]]. The first was [[Memory|remembering]] that she would get through the situation, and that [[darkness]] never prevailed. ([[WC]]: {{cs|Message from the Doctor (webcast)}})
 
[[Champion - LEVEL 1]] was a ''[[Zu-Zu-Poo]]'' [[trading card|card]]. ([[AUDIO]]: {{cs|Maker's Wish: After Dark - Slalvok (audio story)}})
 
The [[Fourteenth Doctor]]'s first [[trip]] on [[Earth|his favourite planet]] was during [[the Meep's attempted destruction of London]]. ([[PROSE]]: {{cs|The Doctor's Busiest Day (short story)|page=8}})
 
In the language spoken by the crew of the [[Captain (Wild Blue Yonder)|captain]]'s [[Spaceship (Wild Blue Yonder)|spaceship]] that accidentally flew to the [[edge of the universe]], the word for 1 was "Sensill". The [[Fourteenth Doctor]], while not speaking the language was able to translate this number, and used that to read the ship's base code, data logs and control elements of the ship. ([[TV]]: {{cs|Wild Blue Yonder (TV story)}}) Seeing "[[Jimbo (Wild Blue Yonder)|Jimbo]]", the Doctor discovered that the ship may not have been as [[abandoned]] as it first seemed. ([[PROSE]]: {{cs|The Doctor's Busiest Day (short story)|page=8}})
 
[[Ruby Sunday]] once recalled [[celebrating]] at [[Christmas]] at [[club (The Church on Ruby Road)|a club]], at which time the [[dancefloor]] was packed, with one [[person]] in the [[middle]] of it all: the [[Fifteenth Doctor]]. ([[PROSE]]: {{cs|Who's the Doctor? (short story)|page=6}})


== Behind the scenes ==
== Behind the scenes ==
Though [[AUDIO]]: ''[[The Haunting (audio story)|The Haunting]]'' establishes that 1 is itself considered a prime number in the [[DWU]], this is a point of contention among mathematicians. It would certainly have been considered a prime, in the story's time period of the [[1890s]]. In particular, the entry for ''Number'' published in 1890 in the 9th edition of ''[[Encyclopædia Britannica]]'' stated that every positive number was either prime or composite, and explicitly listed 1 as prime.<ref>A. Reddick ''et al''. The History of the Primality of One---A Selection of Sources. Accessed at http://primes.utm.edu/notes/one.pdf on 7.12.2015.</ref> Nowadays, in the 21st century, 1 is instead generally considered as neither prime nor composite. To further complicate real-world existence of 1 as a number, there have even been periods of time - like Ancient Greek era - where 1 was in fact ''not even considered a number''.<ref>[https://books.google.co.uk/books?id=cUPXqSb7V1wC&pg=PA35&redir_esc=y#v=onepage&q&f=false Speusippus of Athens: A Critical Study With a Collection of the Related Texts and Commentary, Leonardo Tarán, 1981] (pgs 34-38)</ref> This included notable mathematicians like Aristotle and Euclid.<ref>"What is the smallest Prime?", Chris K. Caldwell & Yeng Xiong; published in Journal of Integer Sequences Vol. 15 (2012)</ref>
Though [[AUDIO]]: ''[[The Haunting (audio story)|The Haunting]]'' establishes that 1 is itself considered a prime number in the [[DWU]], this is a point of contention among mathematicians. There was significant disagreement as to whether to classify 1 as a prime number in the story's time period of the [[1890s]]. In particular, the entry for ''Number'' published in 1890 in the 9th edition of ''[[Encyclopædia Britannica]]'' stated that every positive number was either prime or composite, and explicitly listed 1 as prime.<ref>A. Reddick ''et al''. The History of the Primality of One---A Selection of Sources. Accessed at http://primes.utm.edu/notes/one.pdf on 7.12.2015.</ref> Nowadays, in the 21st century, 1 is instead generally considered as neither prime nor composite. To further complicate real-world existence of 1 as a number, there have even been periods of time - like Ancient Greek era - where 1 was in fact ''not even considered a number''.<ref>[https://books.google.co.uk/books?id=cUPXqSb7V1wC&pg=PA35&redir_esc=y#v=onepage&q&f=false Speusippus of Athens: A Critical Study With a Collection of the Related Texts and Commentary, Leonardo Tarán, 1981] (pgs 34-38)</ref> This included notable mathematicians like Aristotle and Euclid.<ref>"What is the smallest Prime?", Chris K. Caldwell & Yeng Xiong; published in Journal of Integer Sequences Vol. 15 (2012)</ref>


Though unremarked in [[PROSE]]: ''[[Daisy Chain (short story)|Daisy Chain]]'', 1 is also the first and second [[Fibonacci number]].
Though unremarked in [[PROSE]]: ''[[Daisy Chain (short story)|Daisy Chain]]'', 1 is also the first and second [[Fibonacci number]].

Latest revision as of 06:34, 24 October 2024

1 (number)
You may wish to consult One for other, similarly-named pages.

1 was a prime number. (AUDIO: The Haunting [+]Loading...["The Haunting (audio story)"])

According to the Tenth Doctor, "any number that reduce[d] to 1 when you [took] the sum of the square of its digits and continue[d] iterating it until it yield[ed] 1" was a happy number. (TV: 42 [+]Loading...["42 (TV story)"])

Part of the demonstration made by the Twelfth Doctor. (TV: The Pilot [+]Loading...["The Pilot (TV story)"])

The Twelfth Doctor once proved that . (TV: The Pilot [+]Loading...["The Pilot (TV story)"])

Block Transfer Computation made use of 1s and 0s, as it was written in binary. (AUDIO: The Enchantress of Numbers [+]Loading...["The Enchantress of Numbers (audio story)"])

According to the Second Doctor, a one in 13 chance was about 7.6923 percent, odds he didn't like. (COMIC: Card Conundrum [+]Loading...["Card Conundrum (comic story)"])

The Fourth Doctor described Streets Doctor Who Ice Cream as "the first Doctor Who ice treat. (TV: Streets Doctor Who advertisement [+]Loading...["Streets Doctor Who advertisement (TV story)"])

The Tenth Doctor believed that Dalek Caan, who had emerged as the last of the Cult of Skaro, was the one remaining Dalek in "the whole universe". (TV: Evolution of the Daleks [+]Loading...["Evolution of the Daleks (TV story)"])

The Twelfth Doctor once told Bill that "eleven plus two" was an anagram of "twelve plus one", to which Bill responded that both of these were equal to 13. (COMIC: Harvest of the Daleks [+]Loading...["Harvest of the Daleks (comic story)"])

British Summertime began in early 2005 on a Sunday morning at 01:00am when the clocks went forwards. (PROSE: The Clocks Go Forward [+]Loading...["The Clocks Go Forward (short story)"])

The countdown towards the Ninth Doctor's eviction on Big Brother counted from 6 to 0, going through 5, 4, 3, 2, and 1. (TV: Bad Wolf [+]Loading...["Bad Wolf (TV story)"])

The Thirteenth Doctor holds up 1 finger in reference to the number, '1'. (WC: Message from the Doctor [+]Loading...["Message from the Doctor (webcast)"])

In an emergency transmission sent by the TARDIS, the Thirteenth Doctor listed 5 things that she did in any worrying situation. The first was remembering that she would get through the situation, and that darkness never prevailed. (WC: Message from the Doctor [+]Loading...["Message from the Doctor (webcast)"])

Champion - LEVEL 1 was a Zu-Zu-Poo card. (AUDIO: Maker's Wish: After Dark - Slalvok [+]Loading...["Maker's Wish: After Dark - Slalvok (audio story)"])

The Fourteenth Doctor's first trip on his favourite planet was during the Meep's attempted destruction of London. (PROSE: The Doctor's Busiest Day [+]Loading...{"page":"8","1":"The Doctor's Busiest Day (short story)"})

In the language spoken by the crew of the captain's spaceship that accidentally flew to the edge of the universe, the word for 1 was "Sensill". The Fourteenth Doctor, while not speaking the language was able to translate this number, and used that to read the ship's base code, data logs and control elements of the ship. (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"]) Seeing "Jimbo", the Doctor discovered that the ship may not have been as abandoned as it first seemed. (PROSE: The Doctor's Busiest Day [+]Loading...{"page":"8","1":"The Doctor's Busiest Day (short story)"})

Ruby Sunday once recalled celebrating at Christmas at a club, at which time the dancefloor was packed, with one person in the middle of it all: the Fifteenth Doctor. (PROSE: Who's the Doctor? [+]Loading...{"page":"6","1":"Who's the Doctor? (short story)"})

Behind the scenes[[edit] | [edit source]]

Though AUDIO: The Haunting establishes that 1 is itself considered a prime number in the DWU, this is a point of contention among mathematicians. There was significant disagreement as to whether to classify 1 as a prime number in the story's time period of the 1890s. In particular, the entry for Number published in 1890 in the 9th edition of Encyclopædia Britannica stated that every positive number was either prime or composite, and explicitly listed 1 as prime.[1] Nowadays, in the 21st century, 1 is instead generally considered as neither prime nor composite. To further complicate real-world existence of 1 as a number, there have even been periods of time - like Ancient Greek era - where 1 was in fact not even considered a number.[2] This included notable mathematicians like Aristotle and Euclid.[3]

Though unremarked in PROSE: Daisy Chain, 1 is also the first and second Fibonacci number.

Footnotes[[edit] | [edit source]]

  1. A. Reddick et al. The History of the Primality of One---A Selection of Sources. Accessed at http://primes.utm.edu/notes/one.pdf on 7.12.2015.
  2. Speusippus of Athens: A Critical Study With a Collection of the Related Texts and Commentary, Leonardo Tarán, 1981 (pgs 34-38)
  3. "What is the smallest Prime?", Chris K. Caldwell & Yeng Xiong; published in Journal of Integer Sequences Vol. 15 (2012)