表达式中的上标和下标相同的字符 [英] superscript and subscript the same character in an expression

问题描述

在情节中，我想要一个标题，该标题应具有:

In a plot I would like a title which should have:

字符串我的标题是"，后跟由'引起的caharecter alpha(即alpha素数)，alpha也带有下标G.

the string "my title is" followed by the caharecter alpha raised by ' (i.e. alpha prime) with alpha also having the subscript G.

我尝试过:

expression(paste("my title is ",alpha^{"'"}[G],")"))

，但是上面的代码将alpha提升为幂'G.如何在'上标而不在G下标?

but the above code raises alpha to the power 'G . How do I superscript the ' but subscript the G ?

推荐答案

以下任一方法都能解决问题:

Either of the following would do the trick:

alpha[G]^"'"
{alpha^{"'"}}[G]

它们的排版略有不同，因此请选择您喜欢的任何一个.

They are typeset slightly differently, so pick whichever you prefer.

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