# Turán Numbers for 3-Uniform Linear Paths of Length 3

@article{Jackowska2016TurnNF, title={Tur{\'a}n Numbers for 3-Uniform Linear Paths of Length 3}, author={Eliza Jackowska and Joanna Polcyn and Andrzej Rucinski}, journal={Electron. J. Comb.}, year={2016}, volume={23}, pages={2} }

In this paper we confirm a conjecture of F\"uredi, Jiang, and Seiver, and determine an exact formula for the Tur\'an number $ex_3(n; P_3^3)$ of the 3-uniform linear path $P^3_3$ of length 3, valid for all $n$. It coincides with the analogous formula for the 3-uniform triangle $C^3_3$, obtained earlier by Frankl and F\"uredi for $n\ge 75$ and Cs\'ak\'any and Kahn for all $n$. In view of this coincidence, we also determine a `conditional' Tur\'an number, defined as the maximum number of edges in…

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## References

SHOWING 1-10 OF 19 REFERENCES

Refined Turán numbers and Ramsey numbers for the loose 3-uniform path of length three

- MathematicsDiscret. Math.
- 2017

Multicolor Ramsey Numbers and Restricted Turán Numbers for the Loose 3-Uniform Path of Length Three

- MathematicsElectron. J. Comb.
- 2017

The largest number of edges in an $n$-vertex $P$-free 3-graph which is not a star is determined, which allows us to confirm the Tur\'an type formula, R(P;r) + 6 for r in 4,5,6,7.

Turán Numbers for Forests of Paths in Hypergraphs

- MathematicsSIAM J. Discret. Math.
- 2014

The results build on recent results of Furedi, Jiang, and Seiver, who determined the extremal numbers for individual paths, and provide more hypergraphs whose Turan numbers are exactly determined.

Exact solution of the hypergraph Turán problem for k-uniform linear paths

- MathematicsComb.
- 2014

The intensive use of the delta-system method is used to determine exk(n, Pℓ(k) exactly for all fixed ℓ ≥1, k≥4, and sufficiently large n, and describe the unique extremal family.

The 3-colored Ramsey number for a 3-uniform loose path of length 3

- MathematicsAustralas. J Comb.
- 2015

The values of hypergraph 2-color Ramsey numbers for loose cycles and paths have already been determined. The only known value for more than 2 colors is R(C 3 ; 3) = 8, where C 3 3 is a 3-uniform…

A PROBLEM ON INDEPENDENT r-TUPLES

- Mathematics
- 1965

then G(n ; l) contains k independent edges . It is easy to see that the above result is best possible since the complete graph of 2k-1 vertices and the graph of vertices x1, . . ., xk-1 ; Yl, • • •,…

Intersection Theorems for Systems of Sets

- Mathematics
- 1960

A version of Dirichlet's box argument asserts that given a positive integer a and any a2 +1 objects x0 , x1 , . . ., xa 2, there are always a+1 distinct indices v (0 < v < a 2) such that the…