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Neo Sindarin - Reconstructed duodecimal system

Reconstructed duodecimal system

I was there 1B80 years ago (meme)

Imagine that converting from the decimal system to duodecimal works like converting from kilometres to miles. A certain distance is the same, but it's represented by different numbers.

The system of base 12 is called the duodecimal system. In that system, instead of using 10 digits, we use 12. That means that we need two missing algarisms. So, after the algarism nine (9), we use, in English, two new algarisms we will call dek and el.

In a duodecimal place system, based on the standards laid out by the Dozenal Societies of America and Great Britain (organisations promoting the use of duodecimal), ten (or dek) is written as A (or ), eleven (or el) is written as B (or Ɛ), twelve is written as 10, meaning "1 dozen and 0 units", instead of "1 ten and 0 units", whereas 12 means "1 dozen and 2 units" (i.e. the same number that in decimal is written as "14"). According to this notation, 50 means sixty (= five times twelve), 60 means seventy two or "half a gross" (= six times twelve), 100 means one hundred forty-four (= twelve times twelve) or "1 gross", 1000 means one thousand seven hundred twenty eight or "1 great gross", and 0.1 means "1 twelfth" instead of "1 tenth".

These are reconstructed names of the numbers in duodecimal:

  0 lad      10 rast
  1 min      11 rasdmin
  2 tâd      12 rastas       20 tadrast
  3 neledh   13 rasneledh    30 neledhrast
  4 canad    14 raschanad    40 canadarast
  5 leben    15 rathleben    50 leberast
  6 eneg     16 rasteneg     60 enegrast
  7 odog     17 rastodo      70 odôrast
  8 tolodh   18 rastsol      80 tolodhrast
  9 neder    19 rasneder     90 nederrast
  A pae      1A rasche       A0 paerast       100 host (gross)
  B minib    1B rasdmib      B0 mibrast      1000 hû (great-gross)

The words in red are reconstructions based on other terms we have available. These are not widely used and very hypothetical.

Some prefer to describe duodecimal numbers using the known terms, like for example 13 as neledh rast ("three dozen" or "a dozen and three".) In my opinion, if the terms in decimal are compound words, they should also be compound words in duodecimal. I will lay out both approaches here and the reader decides which one s/he prefers.

The same way it works with decimals, the words for gross and great gross are pluralised. So 200 is "hyst dâd" and 2000 is "hui dâd".

Writing cardinal numbers

As explained in the main page, in Sindarin, we break down number terms in reverse order.

In duodecimal system, things get confusing even in English.

The examples below mirror the decimal examples in the main page.

Duodecimal .....: 26 Decimal ........: 30
Reconstructed Two dozen six Eneg tadrast "6 two-dozen"
Conservative Two dozen six Eneg rest dâd "6 {dozen 2}"
Duodecimal .....: 3B or 3Ɛ Decimal ........: 47
Reconstructed Three dozen el Minib neledhrast "11 three-dozen"
Conservative Three dozen el Minib neledh rest "11 {3 dozen}"
Duodecimal .....: 1A6 or 1ᘔ6 Decimal ........: 270
Reconstructed One gross tek dozen six Eneg paerast host "6 ten-dozen gross"
Conservative One gross tek dozen six Eneg rest bae host "6 {dozen 10} gross"
Duodecimal .....: 260 Decimal ........: 360
Reconstructed Two gross six dozen Enegrast hyst dâd "six-dozen {gross 2}"
Conservative Two gross six dozen Rest eneg hyst dâd "{dozen 6} {gross 2}"
Duodecimal .....: 500 Decimal ........: 720
Reconstructed Five gross Hyst leben "gross 5"
Conservative Five gross Hyst leben "gross 5"
Duodecimal .....: 700 Decimal ........: 1008
Reconstructed Seven gross Hyst odog "gross 7"
Conservative Seven gross Hyst odog "gross 7"
Duodecimal .....: B29 or Ɛ29 Decimal ........: 1617
Reconstructed El gross two dozen nine Neder tadrast hyst vinib "{9 two-dozen} {gross 11}"
Conservative El gross two dozen nine Neder rest dâd hyst vinib "9 {dozen 2} {gross 11}"
Duodecimal .....: 11B1 or 11Ɛ1 Decimal ........: 2005
Reconstructed One great gross one gross el dozen one Min mibrast host hû "{1 eleven-dozen} gross great-gross"
Conservative One great gross one gross el dozen one Min rest vinib host hû "{1 {dozen 11}} gross great-gross"
Duodecimal .....: 36A17 or 36ᘔ17 Decimal ........: 74035
Reconstructed Rastodo a hyst bae a chui eneg neledhrast "7-a-dozen and {grosses 10} and {thousand six {dozen-three}}" Conservative Odog rast a chyst bae a chui eneg rest neledh "{7 a-dozen} and {grosses 10} and {thousand six {dozen-three}}"

It's important to stress here the equivalences:
70012 in duodecimal is exactly the same amount of a thing as 100810 in decimal.
"70012" means 7 gross, and a gross is 14410. 14410 × 7 = 100810.
The number is named differently, it has different algarisms, but it's the same amount.

Ordinal numbers

Just like decimal numbers, duodecimal ordinal numbers use the suffix -ui:

  0 --         10 rastui
  1 minui      11 rasdminui
  2 tadui      12 rastasui       20 tadrastui
  3 nelui      13 rasneledhui    30 neledhrastui
  4 canthui    14 raschanadui    40 canadarastui
  5 levnui     15 rathlebenui    50 leberastui
  6 enchui     16 rastenegui     60 enegrastui
  7 othui      17 rastodoui      70 odarastui
  8 tolthui    18 rastsolui      80 tolodhrastui
  9 nedrui     19 rasnederui     90 nederrastui
  A paenui     1A rascheui       A0 paerastui       100 hostui
  B mibui      1B rasdmibui      B0 mibrastui      1000 hûthui ?

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