Law Of Contradiction
Duration: 2 min
This video lesson is available to enrolled students.
Inside: a video lesson and guided study material.
Module outline
- About Course: About the Course
- Paper 1 | General Studies: State Wise GK / राज्यवार सामान्य ज्ञान (GK)
- Paper 1 | Information and Communication Technology: Role of Internet and Web Services, Security in Mobile and Wireless Computing
- Paper 1 | Current Affairs: GK- Current Affairs / GK- समसामयिकी
- Paper 2 | Discrete Mathematical Structure: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic, Permutation, Combination and Probability / क्रमचय, संचय एवं प्रायिकता
- Paper 2 | Digital Computer Organization And Architecture: Number System, Number Representation, Sequential Circuits, Combinational Circuit, Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer
- Paper 2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
- Paper 2 | Programming Languages & Object-Oriented Programming Concepts: Java, OOPS with C++, Java Fundamentals, Array, String, IO & References
- Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
- Paper 2 | Data Structure And Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Minimum Spanning Trees, Advanced Algorithms
- Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS
- Paper 2 | Theory Of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory
- Paper 2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
- Paper 2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Transaction Management, Concurrency Control, Database Recovery, Database Security & Authorization, Enhanced Data Models
- Paper 2 | Computer Network And Information Security: Introduction to CN, Data Communication, Application Layer, Hardware basics, Cyber Threats and Malware Attacks, Network Security, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP
- Paper 2 | Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
- Paper 2 | Current Trends & Technologies: Approaches to AI, Search Algorithms, Game Playing, Knowledge Representation, Planning, Multi Agent Systems, Fuzzy Sets, Natural Language Processing, Artificial Neural Networks, Genetic Algorithms, Data Warehousing & Mining, Electronic Data Interchange and E-Commerce
- Paper 2 | Full Length Mock Tests:
AI summary & chapters
AI Summary
An AI-generated summary of this video lecture.
This educational video features Sanchit Jain, a Knowledgegate Educator, explaining the "Law of Contradiction." The slide text introduces the concept, noting it is also known as the Law of Non-Contradiction (LNC), the Principle of Non-Contradiction (PNC), or the Principle of Contradiction. The instructor systematically underlines these alternative names in red ink to emphasize their equivalence. The core definition provided on the slide states that contradictory propositions cannot both be true in the same sense at the same time. The instructor underlines this entire sentence to highlight the rule. He then presents an example: the two propositions "A is B" and "A is not B" are mutually exclusive. To illustrate this, he writes "A = B" and "A ≠ B" on the screen, visually representing the logical relationship where one proposition excludes the other. The footer indicates this is copyrighted content of Knowledge Gate Eduventures. The slide uses bullet points to structure the definition and the example clearly for the viewer.
Chapters
0:00 – 1:38 00:00-01:38
The video begins with the title "Law of contradiction" underlined by the instructor. He proceeds to underline the parenthetical definitions: "law of non-contradiction (LNC)" and the list of other names like "principle of non-contradiction (PNC)." Next, he underlines the main definition sentence: "Contradictory propositions cannot both be true in the same sense at the same time." Finally, he underlines the example sentence regarding "A is B" and "A is not B." As he explains the example, he writes "A = B" and "A ≠ B" below the text to demonstrate the mutual exclusivity of the propositions.
The lecture effectively defines the Law of Contradiction by listing its various synonyms and stating its fundamental rule regarding truth values. By visually underlining the text and adding handwritten mathematical notation, the instructor reinforces the concept that a proposition and its negation cannot both be true simultaneously. This visual aid helps students grasp the abstract logical principle through concrete examples.

