[ifp] Issue with mathblock

[mmcky]

There is an issue with a mathblock on the ifp lecture

Next we provide a function to compute the difference

$$ u'(c)

\max \left{
     \beta R \, \mathbb E_z (u' \circ \sigma) \,
     [R (a - c) + \hat Y, \, \hat Z]
     \, , \;
     u'(a)
\right} \tag{10} $$

[jstac]

Should the \tag{10} be there?

[mmcky]

thanks @jstac added a fix for this. Once CI is green I will merge.

The tag is added as a numbering technique from jupinx build system.

The issue is the leading - character in the mathblock

[mmcky]

thanks @shlff I was able to fix this one.

[shlff]

Thanks @mmcky . Glad to learn this rule in jupinx.