The following code gives two examples: The former gives only one label for two equations with a redundant notation "{ ", but the later gives three labels (It should be two?).

Is it possible to give only one label for multiple equations without the notation "{"?

A &\sim a,\\
B &\sim b,\\

A &\sim a,\\
B &\sim b,\\

enter image description here

My desired output is the following; enter image description here

  • I've changed the tag to math-mode; your example is using latex, so it's not "tex-core". Both of the answers use structures defined by amsmath. It could be instructive for you to read the amsmath users guide. If you're using a TeX Live installation, this can be accessed by typing texdoc amsmath at a command line prompt. Sep 19, 2019 at 15:43

2 Answers 2


Yes, it is possible by using split environment, and the tags are:

A &\sim a,\\
B &\sim b,
  • 2
    Thank you for quick reply, it is quite new for me, thank you. Sep 19, 2019 at 14:00

You can use an aligned environment nested within your equation:


        A &\sim a,\\
        B &\sim b,
  • 1
    Thank you for reply, it helps me a lot. Sep 19, 2019 at 14:09
  • 2
    There's no need for the final \\ in a stack.
    – Werner
    Sep 19, 2019 at 15:38

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