Qing-Qing Zhao

activity

20152026

most citedGallai-Ramsey numbers for graphs with five vertices of chromatic number four

2 citations · 6 across the 10 of their papers we have counts for

collaborators

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3 papers · 1 filter

math.NT2026

Gap spectra and densities of slow Fibonacci walks

Yaping Mao, Qinghong Zhao

Let $F_{1} = F_{2} = 1$ and $F_{t + 2} = F_{t + 1} + F_{t}$ for $t \geq 1$ . For every $n \geq 2$ , there are unique integers $a, b, t$ such that $n = a F_{t} + b F_{t - 1}$ with $t \geq 2$ and $1 \leq a \leq b \leq F_{t}$ .…

math.NT2017

Powerful numbers in $(1^{ℓ} + q^{ℓ}) (2^{ℓ} + q^{ℓ}) \dots (n^{ℓ} + q^{ℓ})$

Quan-Hui Yang, Qing-Qing Zhao

Let $q$ be a positive integer. Recently, Niu and Liu proved that if $n \geq max {q, 1198 - q}$ , then the product $(1^{3} + q^{3}) (2^{3} + q^{3}) \dots (n^{3} + q^{3})$ is not a powerful number. In this…

math.NT2015★ 1 cited

On the sumsets of exceptional units in $Z_{n}$

Quan-Hui Yang, Qing-Qing Zhao

Let $R$ be a commutative ring with $1 \in R$ and $R^{*}$ be the multiplicative group of its units. In 1969, Nagell introduced the exceptional unit $u$ if both $u$ and $1 - u$ belon…

Gap spectra and densities of slow Fibonacci walks

Powerful numbers in (1ℓ+qℓ)(2ℓ+qℓ)⋯(nℓ+qℓ)

On the sumsets of exceptional units in Zn​

Powerful numbers in $(1^{ℓ} + q^{ℓ}) (2^{ℓ} + q^{ℓ}) \dots (n^{ℓ} + q^{ℓ})$

On the sumsets of exceptional units in $Z_{n}$