Five Star Gift Ideas

Based on your girlfriend's interest in the mathematical expression "-1" OR 3*2>(0+5+11-11)--," it seems like she has a passion for mathematics and logic. Here are a few gift ideas that align with her interests:

1. Puzzle Books: Consider getting her a collection of puzzle books, particularly ones that focus on mathematical puzzles, logic problems, or even code-breaking. These types of books can provide hours of brain-teasing fun while catering to her love for logical thinking.

2. Mathematics Wall Art: Look for unique and visually appealing wall art that incorporates mathematical equations, formulas, or patterns. This can be a great way for her to display her love for mathematics in her living space while adding an artistic touch.

3. Math-themed Jewelry: Explore options for jewelry that feature mathematical symbols like pi, infinity, or even the ones used in the equation she likes. This could be a necklace, earrings, or even a ring. Not only will it be a stylish accessory, but it will also allow her to subtly showcase her passion.

4. Math Board Games: Consider gifting her a math-related board game that combines fun and learning. Games like "Set," "Logic Links," or "Catan" can provide both entertainment and an opportunity to apply mathematical and logical skills in a social setting.

5. Math-inspired Clothing: Look for clothing items, such as t-shirts or hoodies, that feature mathematical jokes, equations, or symbols. This will allow her to wear her passion proudly and spark conversations with like-minded individuals.

6. Online Math Courses or Workshops: If she enjoys furthering her knowledge in mathematics, consider gifting her an online course or workshop focused on a specific math topic or skill she is interested in. This can provide her with an opportunity to learn from experts and delve deeper into her passion.

7. Mathematical Literature: Explore books or biographies related to mathematics and logic. "The Man Who Knew Infinity" by Robert Kanigel or "The Code Book" by Simon Singh are just a couple of examples that mix history, storytelling, and mathematics.

8. Graphing Calculator: If she does not already have one, a high-quality graphing calculator could be a practical and useful gift. Graphing calculators allow for complex mathematical computations and can be beneficial for her studies or professional work.

Remember, the key to a thoughtful gift is to show that you have taken the time to understand her interests and have chosen something specifically tailored to her. Consider her preferences and choose a gift that reflects her love for mathematics and logic while also showing your care and appreciation for her.

Or you can get her a star map with the date when she was born.