In quantified modal logic, the Barcan formula and the converse Barcan formula (more accurately, schemata rather than formulas) (i) syntactically state principles of interchange between quantifiers and modalities; (ii) semantically state a relation between domains of possible worlds. The formulas were introduced as axioms by Ruth Barcan Marcus, in the first extensions of modal propositional logic to include quantification. Related formulas include the Buridan formula. (Wikipedia).
Eugenio Orlandelli: Proof theory for quantified monotone modal logics
The lecture was held within the framework of the Hausdorff Trimester Program: Types, Sets and Constructions. Abstract: This paper provides the first proof-theoretic study of quantified non-normal modal logics. It introduces labelled sequent calculi for the first order extension, both wit
From playlist Workshop: "Proofs and Computation"
This lecture is a part of our online course on introductory structural analysis. Sign up using the following URL: https://courses.structure.education/
From playlist Dr. Structure: Structural Analysis Video Lectures
What is the formula for the law of sines
๐ Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the opposite angle to a known side length of a triangle.
From playlist Law of Sines | Learn About
MIT 6.849 Geometric Folding Algorithms: Linkages, Origami, Polyhedra, Fall 2012 View the complete course: http://ocw.mit.edu/6-849F12 Instructor: Erik Demaine This class reviews Carpenter's Rule and properties of pseudotriangulation. Various proofs are presented, which cover topics includ
From playlist MIT 6.849 Geometric Folding Algorithms, Fall 2012
Learn where the formula for the Law of Sines comes from
๐ Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the opposite angle to a known side length of a triangle.
From playlist Law of Sines | Learn About
How to find the point on the unit circle from the given real number
๐ Learn how to find the point on the unit circle given the angle of the point. A unit circle is a circle whose radius is 1. Given an angle in radians, to find the coordinate of points on the unit circle made by the given angle with the x-axis at the center of the unit circle, we plot the a
From playlist Evaluate Trigonometric Functions With The Unit Circle (ALG2)
How to determine sine of a half angle using the formula
๐ Learn how to evaluate the Sine of an angle using the half-angle formula. The half-angle formula for Sine is helpful when you need to determine the exact value of function given an angle but cannot use a calculator or the angle is not on the unit circle. To evaluate all we need to do is
From playlist Half Angle Formulas
Finding the x and y coordinates for a given point on the unit circle
๐ Learn how to find the point on the unit circle given the angle of the point. A unit circle is a circle whose radius is 1. Given an angle in radians, to find the coordinate of points on the unit circle made by the given angle with the x-axis at the center of the unit circle, we plot the a
From playlist Evaluate Trigonometric Functions With The Unit Circle (ALG2)
Learn where the formula of oblique triangles come from
๐ Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the opposite angle to a known side length of a triangle.
From playlist Law of Sines | Learn About
Find the reference angle of a angle larger than 2pi
๐ Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
How to determine the reference angle of an angle in degrees
๐ Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
Learn how to evaluate the angle in radians for cosine
๐ Learn how to evaluate the Sine of an angle using the half-angle formula. The half-angle formula for Sine is helpful when you need to determine the exact value of function given an angle but cannot use a calculator or the angle is not on the unit circle. To evaluate all we need to do is
From playlist Half Angle Formulas
Excel Basics 12: Complete Formula Lesson of Formula Types & Formula Elements 12 Examples
Highline College Busn 216 Class: Computer Applications taught by Michael Girvin. Download Excel Start & Finished File: https://people.highline.edu/mgirvin/YouTubeExcelIsFun/EB12-FormulaElements.xlsm Download Full Written Notes: https://people.highline.edu/mgirvin/YouTubeExcelIsFun/Office20
From playlist Excel Formulas - Basics and Beyond
Highline Excel 2016 Class 02: Excel Fundamentals: Comprehensive Formula Lesson (15 Examples)
Download Files: https://people.highline.edu/mgirvin/AllClasses/218_2016/218Excel2016.htm In this video learn about: 1. (00:13) Introduction 2. (10:09) Excelโs Golden Rule 3. (04:31) Look at list of Formula Types and Formula Elements 4. (06:29) Number Formula Examples 5. (08:24) Text and Nu
From playlist Excel Advanced Free Course at YouTube. Comprehensive Excel 2016: Calculations & Data Analysis (27 Videos)
Excel Statistical Analysis 03: Comprehensive Worksheet Formula & Model Building Video
Download Excel File: https://excelisfun.net/files/Ch01-ESA.xlsm Learn the fundamentals of Excel worksheet formulas, functions and how to build worksheet models. Topics: (00:00) Introduction (00:19) Topics in video (00:45) Worksheet Formula Elements: what can go into a formula (01:57) Excel
From playlist Excel Statistical Analysis for Business Class Playlist of Videos from excelisfun
Highline Excel 2013 Class Video 02: Comprehensive Excel Formula Types & Elements Video 12 Examples
Download workbook: http://people.highline.edu/mgirvin/AllClasses/214_2013/214/Busn214_2013.htm This is the Highline Community College Class, Spreadsheet Construction taught by Michael Girvin: Basic To Advanced Excel. Topics in this video: Overview: (00:39 min) 1. Hours worked formula. Type
From playlist Excel Formulas - Basics and Beyond
Ctrl + Shift + Enter: Excel Array Formulas #02: Introduction Array Formulas & Math Array Operation
Download files here: http://people.highline.edu/mgirvin/excelisfun.htm EXCEL ARRAY FORMULAS WORK THE SAME IN ANY VERSION OF EXCEL!!! This video covers: 1. (01:00 min) What is an "Array"? 2. (01:55 min) Arrays in Excel. 3. (02:41 min) What is an Array Formula? (See book for more complete d
From playlist Ctrl+Shift+Enter: Mastering Excel Array Formulas (35+ Videos in Series)
M 365 Excel Worksheet Formulas & Models โ Everything You Ever Wanted To Know - 365 MECS 03
Download Excel File: https://excelisfun.net/files/03-M365ExcelClass.xlsx Download PDF File: https://excelisfun.net/files/03-M365ExcelClass.pdf This video is a comprehensive lesson in using Excel Worksheet functions and formulas to build Worksheet Solutions and Models. This full free Micr
From playlist Microsoft 365 Excel Complete Class: free from excelisfun at YouTube - 365 MECS
Excel Formulas & Functions in 10 Minutes. Excel Magic Trick 1629.
Download Excel File: https://excelisfun.net/files/EMT1629.xlsx Learn about the fundamentals of Excel Formulas and Functions in 10 minutes. Excel Workbook for download so you can follow along. Topics: 1. (00:01) Introduction 2. (00:57) Equal Sign Starts all Formulas. 3. (00:57) Create Formu
From playlist Excel Formulas - Basics and Beyond
Find the point on the unit circle given an angle
๐ Learn how to find the point on the unit circle given the angle of the point. A unit circle is a circle whose radius is 1. Given an angle in radians, to find the coordinate of points on the unit circle made by the given angle with the x-axis at the center of the unit circle, we plot the a
From playlist Evaluate Trigonometric Functions With The Unit Circle (ALG2)