# In Context of Chomskhy classification of formal languages

Is it possible that an ambiguous context free language also be a liner context free.
I have doubt regarding scope of ambiguous language in below Venn-diagram.

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It was proved by Ogden (as an application of his famous Pumping Lemma) that $\{ a^ib^jc^k \mid i=j \mbox{ or } j=k \}$ is inherently ambiguous, meaning is has no unambiguous context-free grammar. At the same time the language is linear.
Correct... I learnt about this language in peter Linz. Hendrik Jan except this every thing right na? –  Grijesh Chauhan Dec 12 '12 at 13:31