Validity (logic)

Logic: The Structure of Reason

As a tool for characterizing rational thought, logic cuts across many philosophical disciplines and lies at the core of mathematics and computer science. Drawing on Aristotle’s Organon, Russell’s Principia Mathematica, and other central works, this program tracks the evolution of logic, be

From playlist Logic & Philosophy of Mathematics

Truth and Validity // Lesson 23 [INTRODUCTORY LOGIC]

The fact that truth and validity are different (though related) concepts is one of the most difficult ideas for logic students to grasp. A valid syllogism can contain false statements. And true statements can often be found in invalid syllogisms. But the two concepts are neither necessary

From playlist Introductory Logic

Logic - Types of Statements

An introduction to the general types of logic statements

From playlist Geometry

Validity, reliability and accuracy explained

What doe validity, reliability and accuracy mean in experiments? Watch and find out. Support me on Patreon - https://www.patreon.com/HighSchoolPhysicsExplained Find me on facebook - www.facebook.com/HighSchoolPhysicsExplained credit Pendulum animation - PhET Interactive Simulations Unive

From playlist general

LambdaConf 2015 - Type Theory and its Meaning Explanations Jon Sterling

At the heart of intuitionistic type theory lies an intuitive semantics called the “meaning explanations." Crucially, when meaning explanations are taken as definitive for type theory, the core notion is no longer “proof” but “verification”. We’ll explore how type theories of this sort aris

From playlist LambdaConf 2015

VALIDITY and ENTAILMENT in Truth Trees for Predicate Logic - Logic

In this video on Logic, we look at entailment and validity in truth trees for predicate logic. We learn how to do negated universal decomposition, negated existential decomposition, universal elimination, and existential elimination. We then do three practice truth trees. 0:00 - [Validity

From playlist Logic in Philosophy and Mathematics

Defining and comprehending "implication" in Mathematics

I'm not a native English speaker, sorry about my pronunciation and fluency in English. If there is any kind of mistake in the video, please inform me in the comments section.

From playlist Summer of Math Exposition Youtube Videos

3.3 The Foundations of Logic

From playlist Knowledge Engineering with Semantic Web Technologies by Dr. Harald Sack

SImple proofs and their variations -- Proofs

This lecture is on Introduction to Higher Mathematics (Proofs). For more see http://calculus123.com.

From playlist Proofs

Inference: A Logical-Philosophical Perspective with Alexander Paseau

In this talk, Professor Alexander Paseau, Faculty of Philosophy, University of Oxford, will describe some of his work on inference within mathematics and more generally. Inferences can be usefully divided into deductive or non-deductive. Formal logic studies deductive inference, the obviou

From playlist Franke Program in Science and the Humanities

1. Ch. 1 (Part 1/3) Introduction to Logic, Philosophy 10, UC San Diego - BSLIF

Video lecture corresponding to _Basic Sentential Logic and Informal Fallacies_, Introduction, and Chapter 1, Part 1 of 3. This is for the class Introduction to Logic, Philosophy 10, UC San Diego.

From playlist UC San Diego: PHIL 10 - Introduction to Logic | CosmoLearning.org Philosophy

Rails Pacific 2014 Trailblazer A New Architecture For Rails by Nick Sutterer

From playlist Rails Pacific 2014

Investigation Cognition || General Psychology (PSY 101)

This is a recorded version of a livestream distance learning lecture, recorded during the coronavirus pandemic of 2020. Topics include: logical reasoning, deductive reasoning, syllogisms, belief bias effect, Calvillo et al. (2019), informal fallacies. I claim no ownership over any music

From playlist General Psychology Lectures

Mod-05 Lec-15 The Nyaya Philosophy - I

Indian Philosophy by Dr. Satya Sundar Sethy, Department of Humanities and Social Sciences, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in

From playlist IIT Madras: Introduction to Indian Philosophy | CosmoLearning.org Philosophy

Logical Arguments - Modus Ponens & Modus Tollens

Modus Ponens and Modus Tollens are two logical argument forms. In either case, these have two premises and a conclusion. These argument forms are called valid, which means that if you accept the hypotheses, then it is valid to conclude the conclusion. This is distinct from having a sound a

From playlist Discrete Math (Full Course: Sets, Logic, Proofs, Probability, Graph Theory, etc)

VALID arguments, SOUND arguments, and ENTAILMENT - Logic

In this video on #Logic / #PhilosophicalLogic we look at valid arguments, sound arguments, and learn how to determine validity using truth tables. We do a few examples. 0:00 [Intro] 0:13 [Valid Arguments] 1:16 [Sound Arguments] 2:30 [Valid Arguments and Truth Tables] 06:08 [Example Questi

From playlist Logic in Philosophy and Mathematics

Formal Logic

This video functions as a brief introduction to many different topics in formal logic. Notes on the Images: I looked into the legality of using images for this video a good deal and I've come to the conclusion that there is nothing in this video which could remotely imply these images ar

From playlist Summer of Math Exposition 2 videos

BM3. Formal Proofs

Basic Methods: We define theorems and describe how to formally construct a proof. We note further rules of inference and show how the logical equivalence of reductio ad absurdum allows proof by contradiction.

From playlist Math Major Basics