here is what I have at the moment


and when the document is built:this is the part of the document containing the above

What I would really like is to have the implies symbol pointing into the centre of a large left-hand curly bracket which wraps around the three statements, whilst maintaining the statements current formatting e.g. display math mode!

The problem i've been having is whenever I get the statements into an array the summations lose their formatting and turn small & scruffy.

Can anybody help me to achieve this?

  • 1
    you shouldn't use $$ in latex but you should never, even in plain use $$ at the start of a paragraph, or immediately after another display, the spacing will be completely wrong. You should use a mult-line alignment environment such as align from amsmath – David Carlisle Nov 8 '15 at 15:27

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