Your IRS Preparer Tax Identification Number (PTIN) does expire every tax season. PTIN renewal occurs after October 15, and the identification number is valid through December 31 of the following year.
Famous Wassily Kandinsky Paintings. List of famous Wassily Kandinsky paintings, listed alphabetically with pictures of the art when available. A celebrated artist around the world, Wassily Kandinsky has created some of the most historic paintings of all time.
Gregor Mendel is known for his work on the laws of inheritance. However, he did more than just grow pea plants. Gregor Mendel had an enquiring mind. At the University of Vienna, he took as many science courses as he could. It was probably Mendel's exposure to physics under the tutelage of Christian Doppler that gave the mathematical context for his later experiments.