# Looking for a specific math notation

• iScience
In summary, there is a symbol (upper-case pi) that is used for products, similar to the summation symbol (upper-case sigma) used for sums. For a finite number of factors, the product is written as $\prod_{i = 1}^n C_i$, and for an infinite number of factors, it is written as $\prod_{i = 1}^{\infty} C_i$. It is also noted that Roman numerals are not commonly used in mathematics expressions.
iScience
I'm trying to write a contracted general equation for an expandable equation. Just like there's the summation symbol for sums, is there something for multiplying terms?

for example.. how do i contract the following?

$$C_{i}C_{ii}C_{iii}C_{iv}C_{v}...$$?

iScience said:
I'm trying to write a contracted general equation for an expandable equation. Just like there's the summation symbol for sums, is there something for multiplying terms?

for example.. how do i contract the following?

$$C_{i}C_{ii}C_{iii}C_{iv}C_{v}...$$?
Similar to the symbol used for summations (upper-case sigma), there's another symbol that is used for products (upper-case pi).
$$\prod_{i = 1}^n C_i$$
This would be a product with a finite number (n) of factors.

If you meant this to be an infinite product, it would be
$$\prod_{i = 1}^{\infty} C_i$$

BTW, people generally don't use Roman numerals for indexes in mathematics expressions. What you wrote would usually be written as C1C2C3...

ah okay, thanks a lot mark44!

## 1. What is the best way to search for a specific math notation?

The best way to search for a specific math notation is to use a search engine, such as Google, and include the notation in quotation marks to indicate an exact match. You can also search for the notation on math-related websites or forums.

## 2. How can I learn the meaning of a specific math notation?

To learn the meaning of a specific math notation, you can consult a math textbook, look for online resources or tutorials, or ask a math teacher or tutor for clarification.

## 3. Is there a universal notation for all mathematical concepts?

No, there is not a universal notation for all mathematical concepts. Different areas of mathematics may use different notations to represent the same concept, and some notations may vary between countries or regions.

## 4. How can I create a new math notation?

To create a new math notation, you should first make sure that it is not already in use and that it effectively represents the concept you want to convey. You can then use the notation in your own work and share it with others to see if it gains acceptance.

## 5. Can I use a notation from a different field of math in my work?

Yes, you can use a notation from a different field of math in your work, but it is important to make sure that it is appropriate and clearly understood by your audience. You may also need to provide a brief explanation or context for the notation to avoid confusion.

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