From f9a47174dbebd47abd507c9604b64b0682a4025a Mon Sep 17 00:00:00 2001 From: unlockable Date: Tue, 6 Dec 2022 23:32:02 +0800 Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E9=94=99=E3=80=82?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 14FiniteGeometriesAndLatinSquares.tex | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/14FiniteGeometriesAndLatinSquares.tex b/14FiniteGeometriesAndLatinSquares.tex index e243485..89f33bd 100644 --- a/14FiniteGeometriesAndLatinSquares.tex +++ b/14FiniteGeometriesAndLatinSquares.tex @@ -250,12 +250,12 @@ Fano Plane有很多很好的性质。 \subsection{平衡不完全的区组设计(BIBD)} \begin{definition} - 设$X = \{x_1, x_2, \cdots, x_v\}$,而$k (k < v)$和$\lambda$是确定的飞赴整数。如果区组设计$D = (X, B)$满足如下两个条件: + 设$X = \{x_1, x_2, \cdots, x_v\}$,而$k (k < v)$和$\lambda$是确定的非负整数。如果区组设计$D = (X, B)$满足如下两个条件: \begin{enumerate} \item $B$中每个区组的长度都是$k$; \item $X$中每两个不同的元素$x, y$在$D$中的相遇数$\lambda_D(x, y)$都是$\lambda$, \end{enumerate} - 则称区组设计$D$为一个$(v,k,\lambda)$-\newnoun{平衡不完全区组设计}{balanced incomplete blockdesign},简称$(v,k,\lambda)$-BIBD。 + 则称区组设计$D$为一个$(v,k,\lambda)$-\newnoun{平衡不完全区组设计}{balanced incomplete block design},简称$(v,k,\lambda)$-BIBD。 \end{definition} \begin{example}