 Quote by StevieTNZ
"Combinations with odd numbers of |45> do not occur".
But you can write those from |V>|H>|H>|V>+|H>|V>|V>|H>?
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I told you, just write |H> and |V> in terms of |45> and |135>. Then just expand out the products using the distributive property, like |45>(|45>+|135>)=|45>|45>+|45>|135>