Difference between Satisfiable, Valid, Unsatisfiable & Invalid
A formula is satisfiable if it is possible to find an interpretation (model) that makes the formula true.
A formula is valid if all interpretations make the formula true.
The opposites of these concepts are unsatisfiability and invalidity, that is, a formula is unsatisfiable if none of the interpretations make the formula true, and invalid ifsome such interpretation makes the formula false.
Difference between Satisfiable, Valid, Unsatisfiable & Invalid的更多相关文章
- css required,focus,valid和invalid介绍
本文章来给大家介绍在css3定义required,focus,valid和invalid样式的方法,此方法目前只支持ie9+及ff,gg浏览器哦.css3 提示只适用于高级浏览器:ChromeFire ...
- css3中定义required,focus,valid和invalid样式
css3 提示只适用于高级浏览器: ChromeFirefoxSafariIE9+ valid.invalid.required的定义 代码如下 复制代码 input:required, input ...
- apt update 提示 Release file for http://… is not valid yet (invalid for another d..)
由于在公司里需要使用代理上网,搞了好久,好不容易把 apt 整得可以访问外网了,结果在执行 spt update 时总是提示 Release file for http://- is not vali ...
- UTF-8 Invalid Byte Sequences
Chances are, some of you have run into the issue with the invalid byte sequence in UTF-8 error when ...
- ubuntu 18.04在更新软件库时出现E: Release file for http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease is not valid yet...
1.完整的错误信息如下: E: Release file for http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease i ...
- Valid page threshold based garbage collection for solid state drive
A method for garbage collection in a solid state drive (SSD) includes determining whether the SSD is ...
- 挑战一下吧!C#测试开发工程师英语面试题
1. Given a rectangular (cuboidal for the puritans) cake with a rectangular piece removed (any size o ...
- MediaPlayer 状态机 API 详解 示例
简介 public class android.media.MediaPlayer extends Object implements VolumeAutomation 可能需要的权限: One ma ...
- ref:Manual SQL injection discovery tips
ref:https://gerbenjavado.com/manual-sql-injection-discovery-tips/ Manual SQL injection discovery tip ...
随机推荐
- C# IEnumerable,Lambda表达式和 Parallel并行编程的用法
以前一直主要做C++和C方面的项目,对C#不太了解熟悉,但听说不难,也就一直没有在意学习C#方面的知识.今天有个C#项目,需要做些应用的扩展,同时修改一些bug.但看了C#代码,顿时觉得有些不适应了. ...
- Android中EditText样式修改 聚焦光标、背景
在Android开发中,根据项目的需求,需要定制一些特殊的样式,例如:使用EditText时,聚焦时的背景及光标图片使用自定义而非android系统默认的.这两天,在项目中涉及此需求,现记录如下: 首 ...
- Dapper试用
以下代码摘自imfunny的<给力分享新的ORM => Dapper> http://www.cnblogs.com/imfunny/archive/2011/09/16/21788 ...
- 【书海】《Head First Java》 ——读后总结
<Head First Java> 中文版 (第二版) IT`huhui前言录 <Head First Java>这本书我不算特别细的看了一遍.认为十分适合初学者,甚至是没接触 ...
- Yii中设置时间分区
在wamp环境下,运行一个Php yii的项目 出现问题: Use of undefined constant PRC - assumed 'PRC' 检测我的环境 PHP5.3 检测Php.ini中 ...
- Android编译错误, Ignoring InnerClasses attribute for an anonymous inner class
今天在做android项目时,加入第三方包,一编译就报错.错误如下:[2012-01-13 14:51:25 - xxx] Dx warning: Ignoring InnerClasses attr ...
- [ACM_搜索] Triangles(POJ1471,简单搜索,注意细节)
Description It is always very nice to have little brothers or sisters. You can tease them, lock them ...
- [BTS] System.Xml.Schema.XmlSchemaException: The complexType has already been declared when generate IDoc schema.
I use wcf-sap adapter for generate the schema of IDoc that named "YHREMPMASTER". but throw ...
- Qt 5.3.1 版本应用程序的发布问题
问题描述:用过Qt的朋友,都知道,完成的Qt程序,只能在QT环境里运行.在debug环境里,没有配置环境路线的情况下,必须包含多个dll库,然而每个dll库的大小确实很大的.但有时候还是会失败的,在一 ...
- Maven学习总结(一副本)——Maven配置和搭建
环境准备: JDK 1.6 Maven 3.0.4 myeclipse 8.6.1 安装 Maven 之前要求先确定你的 JDK 已经安装配置完成.Maven是 Apache 下的一个项目,目前最新版 ...