As an expert in the field of Roman numerals, I have a deep understanding of the system used by the Romans to represent numbers. Roman numerals are a combination of letters from the Latin alphabet: I, V, X, L, C, D, and M. These letters are used to represent the following values: I for 1, V for 5, X for 10, L for 50, C for 100, D for 500, and M for 1000.

When it comes to representing larger numbers, the Romans used a subtractive principle. This means that if a smaller numeral appears before a larger numeral, the smaller numeral is subtracted from the larger one. For example, IV represents 4 (5 minus 1), and IX represents 9 (10 minus 1).

However, when it comes to the numeral for 2000, the Romans did not use a subtractive principle. Instead, they used a combination of the numeral for 1000 (M) and the numeral for 1 (I). The numeral for 2000 is represented as MM. This is because the Romans used a system where repeating a numeral indicated multiplication by 1000. So, two Ms together signify two thousand.

It's important to note that the reference to "MM" being incorrect and "MM" being the correct representation for 2000 is a common misconception. The correct Roman numeral for 2000 is MM, not MM. The double M is used to represent two times one thousand, which equals two thousand.

In conclusion, the Roman numeral for 2000 is MM. This is a straightforward representation without the need for any subtractive principles or additional letters. It's a testament to the efficiency and simplicity of the Roman numeral system when it comes to representing large numbers.

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Years in roman numeralsYearRoman numeral1997MCMXCVII1998MCMXCVIII1999MCMXCIX2000MM37 more rowsread more >>