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I am writing report using Latex software but I got stuck while using tags.

consider a statement( for example):

for any A ∈ Γ, B ⊆ A implies B ∈ Γ. The traditional (t, n) threshold secret sharing [3 - 9] is a special case of general secret sharing.Their qualified subsets are those that have at least a certain, per-determined number of participants.

And my latex code :

for any A \in T, B  \subseteq A implies B \in T.The traditional (t, n) 
threshold secret sharing [3 - 9] may be a special case of general secret sharing.
Their qualified subsets area unit those who have a minimum of an exact, 
pre-determined variety of participants.

The output generated in the PDF look like:

for any A ∈ T;B ⊆ AimpliesB ∈ T.Thetraditional(t,n)thresholdsecretsharing[ 3-9]maybeaspecialcaseofgeneralsecretsharing:T heirqdeterminedvarietyofparticipants.

My questions is when I am using some tags, after using tags text occurring after that tag is displayed without space between them as you can see in the latex output above.

I have referred latex pdf also but I am not getting my answer. so please suggest to me some way so I can display my text in original form as you can see in example statement.

3

TeX must give you errors like

Missing $ inserted. [for any A \in]

which it tries to ignore and compiles the document anyway. This is because \in belongs to the math mode, so TeX enables it, and applies it until the end of the document. In math mode spaces between characters are ignored (I'm simplifying here a little, but it does not matter for this question), so all the text after the first \in lacks spaces.

To have your desired output, you must enable and disable the math mode explicitly (inline math is written between dollar signs):

for any $A \in T$, $B \subseteq A$ implies $B \in T$. The traditional 
$(t, n)$ threshold secret sharing [3 - 9] may be a special case of general 
secret sharing. Their qualified subsets area unit those who have a minimum 
of an exact, pre-determined variety of participants.

For the future: questions about TeX belong on TeX.SE.