BlogHide Resteemsdrdawud (42)in math • 7 years agoI'm back - An updateAs some of you know, I was teaching and coaching a math team. This took up a significant amount of my time and energy and I wasn't able to update as much as I wanted. The semester recently ended…drdawud (42)in math • 7 years agoRegarding the Geometric Meaning of DeterminantsHello steemians, it's been a very busy two weeks for me. It was midterm week, which meant creating and grading midterms; then we were sponsoring a Math Olympiad, which meant organizing some 80-odd…drdawud (42)in poem • 7 years agoA Song of IraqI composed this poem in 2012, during the Iraq war. At that that time, it bore the subtitle «رسالة إلى باراك أوباما» ("A Letter to Barack Obama"), and I dedicated it to those who had been displaced…drdawud (42)in math • 7 years agoFinding the height of a Sea Island: A 1800-year old math problemIn a previous post , I wrote about how ancient surveyors attempted to find the height of a sea island. Keeping in mind, this was largely before the advent of trigonometric tables, the methods…drdawud (42)in science • 7 years agoPuffin beaks glow when exposed to ultraviolet lightBritish ornithologist Jamie Dunning at the University of Nottingham in England has shown that puffins have beaks which fluoresce under ultraviolet (UV) light. Dunning discovered that the the cere…drdawud (42)in poetry • 7 years agoPoema: El Ultimo Viaje (con traduccion)¡Mis queridos soldados! Ya hemos llegado al cabo – Juntos compartamos un vino. Después de decir adiós, Déjenme dormir en paz Para cuando despierte Y vea la luz radiante. Que sea de nuevo…drdawud (42)in math • 7 years agoFinding the Height of a Distant Island: Can you solve this 1800-year old math problem?I'm still officially on vacation, but I thought I'd post anyways today. For Chinese-speaking communities around the world, today is the Qingming Festival, or the "Tomb Sweeping Festival". On this…drdawud (42)in math • 7 years agoAssociativity in Tropical Set TheoryToday I wanted to do something a bit different and do something more advanced. I usually blog about high school and undergraduate math, but as I'm on spring break, and I have a bit more time to…drdawud (42)in math • 7 years agoSolutions to Geometry QuestionsSeveral days ago, I made a post about two simple geometry questions. Here I present my solutions: Question 1: Given that CF = FD and that , what fraction of square ABCD does…drdawud (42)in math • 7 years agoThe nth root of complex numbersThe modulus of the Pearcey Integral Function . Source: In the previous post, we showed that any complex number to an integer power can be expressed as: Where r is the modulus of…drdawud (42)in politics • 7 years agoOne Continent: Europe's Future Goes Through EurasiaImage source: wikipedia.org (public domain license) Note: This article was originally published by Thierry Vanroy in 2012. Mr. Vanroy is a Belgian political writer, public speaker and…drdawud (42)in math • 7 years agoOperations on Complex Numbers and DeMoivre's TheoremStunning fractals can be created using complex numbers. Source: In the previous post, I showed how complex numbers developed, what they mean, and how they can be represented. In this post…drdawud (42)in mathematics • 7 years agoThe Complex Number System: An IntroductionOur ultimate goal in this series of posts is to find all possible solutions for the nth roots of unity, and in general, for complex numbers. I anticipate this might take two or three posts, but…drdawud (42)in photography • 7 years agoBuddhist Calligraphy on a Stone Column: Osaka, JapanThis photo was taken at a Buddhist temple in Osaka, Japan. I don't remember which one. It depicts a stone column with the inscription "南無阿彌陀佛" (Hiragana: なむあみだぶつ, Romaji "namu amida butsu") in a…drdawud (42)in colorchallenge • 7 years agoColor Challenge: PurpleHello Steemians, Here is my attempt at the color challenge. I took these photos on the grounds of the Tianyuan Temple on the outskirts of Taipei. The Tianyuan Temple is known for being a…drdawud (42)in photography • 7 years agoSome Views of Gyeongbok Palace 경복궁 in Seoul, KoreaA view of Gyeonghoeru (Hangul: 경회루; Hanja: 慶會樓; Literally, "Hall of Celebration"), built in 1867. It is built upon an artificial lake, and features Mt. Bugak as a backdrop. As its name…drdawud (42)in photography • 7 years agoTaipei 101 On a Cloudy EveningThe Taipei 101 Tower is a landmark the Xinyi District of the City of Taipei. It measures 509.2m tall [ Source ] and was the tallest building in the world before being supassed by the Burj Khalifa…drdawud (42)in math • 7 years agoTwo Simple Geometry QuestionsOn this day in 1809, Joseph Liouville was born. Also on this day in 1721, Johann Sebastian Bach published his famous Brandenburg Concertos which he dedicated to Christian Ludwig, Margrave…drdawud (42)in math • 7 years agoVieta's FormulasFrancois Viete, for whom the topic of this post is named. Source: Wikipedia.org , Public Domain François Viète was a French mathematician who worked in the 16th century, and one of the…drdawud (42)in motivation • 7 years agoReturning to the Fundamentals: On the need for Strength and ProwessNote: This essay is based on a talk given by Dr. Saiffudin Robinson. It was originally published at the now-defunct RidingTheTiger.org, and has been reprinted with permission of the former…
