Hebrew letter

When preparing a math book in Word, on infinites, I must use the Hebrew letter aleph and with subscripts 0, 1, 2, etc. And occasionally in parentheses.
When opening the final ebook in Sigil to give definitive format (and also in other readers), the equation appears "broken": the subscript to the left instead of to the right, the closing parenthesis also to the left ...
Then I noticed that, being the Hebrew writing from right to left, reverses the position of the characters.
Is there any way to prevent this?
I have provisionally replaced the character with an image.