Thursday, June 21, 2012

A continuation of Math vocabulary leading to a new poem


Math vocabulary is a different language.  I made sure to clarify the language this time!  Even conjunctions have different meanings!  Online dictionaries don't always have the mathematical definition.  I asked the teacher for the definitions.    Some definitions I am still working on and I think this is why I enjoy using the vocabulary in poems. Not only does it provide a rich experience in language it also require some work on the readers part to understand how the word is being used and how meaning can change because of the secondary knowledge of the math definition.

Here goes:
Quantitatively:

Decontextualize:  Take out of context, to remove from context

Contextualize: to put in context

Combinatorics: area of mathematics that deal with counting problems the study of finite or countable discrete structures.  Oldest and most accessible parts of combinatorics is graph theory!!!!  used frequently in computer science in the analysis of algorithms.

Up to 3 means 2, could be 1, or could be 3

Factorial: 1x2x3x4x5x6x7x8...  and is denoted as 15!

Permuting: rearranging objects or values

Permutations- every detail matters!  Used for lists

Combinations: easy going, details don't matter, for groups, order doesn't matter

The rule to determine the number of permutations of "n" objects was known in Hindu culture at least as early as 1150.  The Lilavati by the Indian mathematician Bhaskar11

Explicit: in math means it can be applied to any situation and is different than recursive

Recursive:  Blame this one on middle school teachers.  Still searching...

Referents:A referent is a personal item that is used to estimate, whether a physical entity or mental construct.

http://teachmath.openschoolnetwork.ca/wordpress/grade-1/number-sense/estimating/

I am not too sure about this one.  I forgot the context it was used in during class.  I came across a slide show about a referent that kind of boggles my mind.

"Numbers are graphemes till they have a referent.  5  "  http://www.slideshare.net/Claretcarat/the-referent-unite
ferentsgiveNumeralsMagnitudeReferentsgiveNumeralsMagnitudeNumeralsaregraphemesuntiltheyhaveareferent.

Inductive:
Inductive reasoning is making conclusions based on patterns you observe.

The conclusion you reach is called a conjecturehttp://www.basic-mathematics.com/examples-of-inductive-reasoning.html

Mathematical "between":  does it include the bookends?  Between 1 and 20.  So does that include 1 and 20? No.

Mathematical "or":  means both- all.  all the odds and multiples.  Not the exclusive "or"- cake or ice cream.

Punnet Square:  a diagram used to predict an outcome of a particular cross or breeding experiment.  Tabular summery of every possible combination of one maternal alete with 1 paternal alete.  This was from the 5th grade and middle school teachers in my group.  We used it to show how many combinations of out fits we could g Vertex:  From Wikipedia:  a vertex (plural vertices) or node is the fundamental unit of which graphs are formed: 


My understanding?  Hey it's the dot in space! 


Edges:  Every edge has two endpoints in the set of vertices, and is said to connect or join the two endpoints. An edge can thus be defined as a set of two vertices


 
It's connecting the dots folks! 



Adjacent: Two vertices are adjacent provided there is an edge between them connected directly.  They share an edge Incident: An edge is incident to a vertex provided it connects and ends a t a vertex





Euler Circuit:  Draw a graph without lifting your pencil off the page and without drawing an edge more than once, and starting at the same vertexes if we had 3 skirts, 2 sandals, and 4 shirts.

               Alternating sequence of vertices and edges: V0, e1, v1, e2, v2, where
               Each edge  e1 , is incident to vertices vi-1and vi
               v0=vn
               each edge in G appears in the sequence exactly once 
and if that is gobble gook to you welcome to my world!!


Discrete: dictionary definition: distinct from others; separate; consisting of distinct parts; discontinuous

(Thorndike and Barnhart)

Mathematical Definition:  Discrete mathematics involves the study of objects and ideas that can be divided into separate or discontinuous parts.  Thus discrete mathematics can be contrasted with the classical notion of continuous mathematics, which is the mathematics underlying most of algebra and calculus.    Discrete mathematics is well suited to situations whose main focus is counting as contrasted with continuous mathematics whose main objective is the measurement of an object.  The set of positive integers is an example of a discrete set; the set of real numbers is an example of a set that is not discrete.
(1991 NCTM Yearbook)


Dang I always forget what "real" numbers are.  How can numbers come with so many names and descriptors!!!!

Finite set: In mathematics, a finite set is a set that has a finite number of elements. For example,

Is a finite set with five elements? The number of elements of a finite set is a natural number (non-negative integer), and is called the cardinality of the set. A set that is not finite is called infinite. For example, the set of all positive integers is infinite:

Finite sets are particularly important in combinatorics, the mathematical study of counting. Many arguments involving finite sets rely on the pigeonhole principle, which states that there cannot exist an injective function from a larger finite set to a smaller finite set.

Subsets:  For example, the set {5,6,7} is a 3-set, a finite set with three elements, and {6,7} is a 2-subset of it.


I hope to get my room done tomorrow.  I don’t want it hanging over my head anymore.  All the cupboards and closets and wall are cleaned out.  Way too much stuff.  I need to throw more away.

No phone calls.  I am anticipating, which I know I am not supposed to anticipate trouble, a call from the lawyer because Pat lost his job.  I think he will probably try to ask for spousal support again.  Plus what happens to his 401 K now that he has lost his job?  I know he is going to need health insurance what happens to that?  That’s the Cobra thing and he has to pay for that.  Plus there are the car loans.  My lawyer, who does not return my phone calls or emails, will probably be calling me soon.  I am disgusted.  These things are the consequences of his actions and why should I have to pay for them?

I think all of this has led to the start of a new poem I shall call ”Finite”, in the mathematical sense.  Another math poem.

Just wondering if my sons will ever call me mom again or if I will ever stop feeling sorry for myself?

It’s the break up of a finite set of discrete numbers….

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