You probably mean ludis ergo es, which means "you play, therefore you are" (singular "you"). Ludes is "you will play".
The Latin equivalent of 'You think therefore you are' may be Cogitas ergo es. Or it may be Cogitatis ergo estis. In the word-by-word translation, the verbs 'cogitas' and 'cogitatis' respectively mean 'you' and 'you all'. The adverb 'ergo' means 'therefore'. The verbs 'es' and 'estis' respectively mean 'you are' and 'you all are'.
Es.
You are Calibus.
Vos reputo proinde vos es The above literally translated to "You (plural) I think consequently you (singular) are you (plural)." "You think therefore you are" talking to one person would be "Cogitas ergo es." If you were talking to more than one person, it would be "Cogitatis ergo estis."
The phrase "dies is es" in Latin translates to "day is this" in English. However, it's likely a misinterpretation or a mix-up of Latin phrases. A more common phrase might be "dies est," which simply means "it is day." If you have a specific context or a more precise phrase in mind, please provide that for a more accurate translation.
quis es means "who are you?"
The plural of the monotreme mammal is normally platypusesnot platypi. It is not of the same Latin form as radius or alumnus, and even some Latin plurals use -es in English.
"Sharp edge or point" is an English equivalent of the Latin word aciēs. The feminine, fifth declension noun also translates less literally as "battle," "battle line" or engagement" in English. The pronunciation will be "A-kih-es" in classical Latin and "A-tchyes" in Church Latin.
Tu es in french translates to latin as just 'es'. In latin I am is just sum; ego sum is tautological. Similarly 'you(singular) are' is not written 'tu es'.
es- you are (singular) estis- you are (plural)
Latin men es fervens
The Latin for "you are" is the second person singular present active indicative form of the verb sum, which is es.