Jean Yeh

collaborators

3 papers

math.CO2008

Enumerations for Permutations by Circular Peak Sets

Pierre Bouchard, Hungyung Chang, Jun Ma +1

The circular peak set of a permutation $σ$ is the set ${σ (i) ∣ σ (i - 1) < σ (i) > σ (i + 1)}$ . In this paper, we focus on the enumeration problems for permutations by circular peak sets.…

math.CO2008

Some Enumerations for Parking Functions

Po-Yi Huang, Jun Ma, Jean Yeh

In this paper, let $P_{n, n + k; \leq n + k}$ (resp. $P_{n; \leq s}$ ) denote the set of parking functions $α = (a_{1}, ..., a_{n})$ of length $n$ with $n + k$ (respe. $n$ )parkin…

math.CO2008

k-flaw Preference Sets

Po-Yi Huang, Jun Ma, Jean Yeh

In this paper, let $P_{n; \leq s; k}^{l}$ denote a set of $k$ -flaw preference sets $(a_{1}, ..., a_{n})$ with $n$ parking spaces satisfying that $1 \leq a_{i} \leq s$ for any $i$ and $…