# Math Help - Subscripting for subscripts greater than 2

1. ## Subscripting for subscripts greater than 2

In a recent post to MHF I tried to form the sum $r_{2}$ $c_{2}$ + $r_{1}$ $c_{1}$ only with the second set of subscripts equaling 7

However Latex always returned an error for all integer subscipts greater than 2

Bernhard

2. ## Re: Subscripting for subscripts greater than 2

Hello, Bernhard!

In a recent post to MHF I tried to form the sum $c_1$ $+$ $c_2$ with subscripts greater than 2.

However Latex always returned an error.

Using $$, it will not support any expression longer than $c_1$ We can produce the terms separately: .[tex]c_5$$ . $\Rightarrow\;\;c_5$
. . but this is very inefficient.

I recommend using $$tags. [tex]c_1,c_2,c_3,c_4,\hdots$$ . $\Rightarrow\;\;c_1,c_2,c_3,c_4,\hdots$

3. ## Re: Subscripting for subscripts greater than 2

Hello Soroban,

Thanks for your help - later I will try to learn how to use $$tags $c_{5}$ 4. ## Re: Subscripting for subscripts greater than 2 Hello Soroban, Thanks for your help - later I will try to learn how to use [tex] tags $r_{5}$ + $C_{5}$ 5. ## Re: Subscripting for subscripts greater than 2 Hello Soroban, Thanks for your help - later I will try to learn how to use [tex] tags $r_{8}$ 6. ## Re: Subscripting for subscripts greater than 2 Hello, Bernhard! Thanks for your help - later I will try to learn how to use [tex] tags [tex]r_{8}$$ . $r_8$

$$r_2$$ . $r_2$

$$r_3$$ . $r_3$

$$r_4$$ . $r_4$

$$r_5$$ . $r_5$

Interesting . . . $$doesn't like subscripts greater than 4. 7. ## Re: Subscripting for subscripts greater than 2 Originally Posted by Soroban [tex]r_2$$ . $r_2$

$$r_3$$ . $r_3$

$$r_4$$ . $r_4$

$$r_5$$ . $r_5$

Interesting . . . $$doesn't like subscripts greater than 4. It's picky with subscripted letters too: [tex]r_n$$ . $r_n$

$$r_k$$ . $r_k$

$$r_w$$ . $r_w$

My theory is that the [tex] compiler, in its present debilitated state, can only render formulae that it has at an earlier time (before its troubles started) stored in some library of previous requests.