part ▁from ▁helping ▁to ▁confirm ▁that ▁Irish ▁Open Post codes ▁have ▁been ▁entered ▁accur ately ▁without ▁errors ▁such ▁as ▁ju xt ap osed ▁letters ▁and ▁digits , ▁it ▁can ▁be ▁used ▁to ▁determine ▁whether ▁the ▁code ▁rel ates ▁to ▁Ireland , ▁or ▁to ▁Hong ▁Kong ▁or ▁Y emen , ▁places ▁for ▁which ▁similar ▁ge oc odes ▁are ▁based , ▁where ▁the ▁location - based ▁check sum ▁result ▁will ▁differ . ▁ ▁See ▁also ▁ ▁An ▁Post ▁ ▁Universal ▁Post al ▁Union ▁ ▁List ▁of ▁postal ▁codes ▁ ▁References ▁ ▁External ▁links ▁ ▁E ir code ▁( o fficial ▁website ) ▁ ▁Address ▁FA Q s ▁ ▁Com Reg ▁– ▁Commission ▁for ▁Communic ations ▁Reg ulation ▁ ▁DC EN R ▁Post code ▁information ▁page ▁ ▁Post al ▁addresses ▁in ▁the ▁Republic ▁of ▁Ireland ▁Ireland ▁Ireland <0x0A> </s> ▁Jean ▁Jacques ▁More au ▁( 3 1 ▁July ▁ 1 9 2 3 ▁– ▁ 9 ▁January ▁ 2 0 1 4 ) ▁was ▁a ▁French ▁math ematic ian ▁and ▁mechan ician . ▁He ▁normally ▁published ▁under ▁the ▁name ▁J . ▁J . ▁More au . ▁ ▁More au ▁was ▁born ▁in ▁Bl aye . ▁He ▁received ▁his ▁doctor ate ▁in ▁mathematics ▁from ▁the ▁University ▁of ▁Paris , ▁then ▁became ▁a ▁research er ▁at ▁the ▁Centre ▁National ▁de ▁la ▁Re cher che ▁Scient ifique . ▁ ▁He ▁was ▁appointed ▁Professor ▁of ▁Mathemat ical ▁Mod els ▁in ▁Physics ▁at ▁Po it iers ▁University ▁and ▁later ▁Professor ▁of ▁General ▁Mechan ics ▁at ▁Mon pel lier ▁University ▁II . ▁