Tbeli Abuserisdze ( ka, ტბელი აბუსერისძე) (c. 1190 – 1240) was a medieval
Georgian
Georgian may refer to:
Common meanings
* Anything related to, or originating from Georgia (country)
** Georgians, an indigenous Caucasian ethnic group
** Georgian language, a Kartvelian language spoken by Georgians
**Georgian scripts, three scrip ...
scholar and religious writer.
His merits
A son of
Ivane Abuserisdze, ''
eristavt-eristavi
''Eristavi'' (; literally, "head of the nation") was a Georgia (country), Georgian feudal office, roughly equivalent to the Byzantine Empire, Byzantine ''strategos'' and normally translated into English language, English as "prince" or less common ...
'' ("archduke") of
Khikhata (
Upper Adjara, southwestern Georgia), he is principally known for his original treatise, ''The Complete Timekeeper'', which contains information related to
calendar
A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such a system. A calendar is also a physi ...
s, descriptions of different systems for maintaining
chronology
Chronology (from Latin ''chronologia'', from Ancient Greek , ''chrónos'', "time"; and , '' -logia'') is the science of arranging events in their order of occurrence in time. Consider, for example, the use of a timeline or sequence of events. I ...
, dates of ecclesiastic holidays, tables of moonrise and moonset, information on special cycles, etc. Abuserisdze's work is purely theoretical, based largely upon his own mathematical investigations rather than on direct astronomical observations.
Beyond this treatise, he authored ''The Miracles of
Saint George
Saint George (Greek: Γεώργιος (Geórgios), Latin: Georgius, Arabic: القديس جرجس; died 23 April 303), also George of Lydda, was a Christian who is venerated as a saint in Christianity. According to tradition he was a soldier ...
... and the Testament of the Author'', a work of religious as well as of historical character, in which he relates, among other things, the history of the
Abuserisdze family. The religious-historical work describes the construction activities of the
Ajarian farmers, the art of the Kalatozi, the Potsk-Basil construction. It contains the Abouserdester's family of mathematics, as well as important information about the life and morals of that time, as well as the data of specific historical character. The chronological-astronomical treatise is an extensive cell reference that describes the advantages and disadvantages of different systems of the cycling system and provides a set of pilgrimages and lunar arrivals.
He has been canonized by the
Georgian Orthodox Church
The Apostolic Autocephalous Orthodox Church of Georgia ( ka, საქართველოს სამოციქულო ავტოკეფალური მართლმადიდებელი ეკლესია, tr), commonly ...
. His feast day is on 17 August.
References
*Machitadze, Archpriest Zakaria (2002)
Saint Tbeli Abuserisdze ''The Lives of the Georgian Saints''.
*Abuselidze, Giorgi (2004), ''South-Western Georgia of Tbel Abuserisdze Epoch (Economic Situation)''.
Tbilisi
Tbilisi ( ; ka, თბილისი ), in some languages still known by its pre-1936 name Tiflis ( ), is the Capital city, capital and the List of cities and towns in Georgia (country), largest city of Georgia (country), Georgia, lying on the ...
: Metsniereba, .
13th-century Christian saints
12th-century people from Georgia (country)
13th-century people from Georgia (country)
1190 births
1240 deaths
Scientists from Georgia (country)
Astronomers from Georgia (country)
Writers from Georgia (country)
Nobility of Georgia (country)
Saints of Georgia (country)
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