It seems that you are looking for a Christmas gift for your boyfriend but your message includes a confusing combination of characters and mathematical equations. Can you please provide some more information about your boyfriend's interests, hobbies, or any specific preferences he might have? With a little more information, I can suggest some meaningful and personal gift ideas that cater to his interests.
Or you can get him a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.