![](/files/happy5.png)
Harutyunyan, Ararat
Large acyclic induced subdigraph in a planar oriented graph. ★★
Author(s): Harutyunyan
Conjecture Every planar oriented graph
has an acyclic induced subdigraph of order at least
.
![$ D $](/files/tex/b8653a25aff72e3dacd3642492c24c2241f0058c.png)
![$ \frac{3}{5} |V(D)| $](/files/tex/5a32f551bf4043e68e6d6a234d5683ce8fff1aea.png)
Keywords:
![Syndicate content Syndicate content](/misc/feed.png)
Author(s): Harutyunyan
Keywords: