Natural number

3. Samples of natural selenium contain six stable isotopes. these isotopes have the same number of proton & electrons in each atom they differ in the number of neutrons in each atom, the atomic mass, & their nuclear stability Electron configuration 1S2, 2S2, 2P6, 3s2, 3p6, 4s2, 3d10, 4p4 Indicate the number of unpaired electrons in the ground-state atom it has 2 unpaired electrons in the 4P orbital. in a chemical reaction it is likely to take 2 electrons & become Se-2 or likely to do 2 covalent

study of numbers, and counting, and measuring, but that is only the beginning. Mathematics involves the study of number patterns and relationships. Set theory is an area of mathematics that deals with inconceivable numbers, and bottomless concepts such as infinity. The history of set theory is relatively dissimilar from the history of most other parts of mathematics. Set Theory was founded by Georg Cantor in 1874 in his paper “On a Characteristics Property of All Real Algebraic Numbers”. Naive set

ABSTRACT In this paper the concept of upper edge geodetic domination number (UEGD number) and upper connected edge geodetic domination number (UCEGD number) of a graph is studied. An edge geodetic domination set (EGD set) S in a connected graph is minimal EGD set if no proper subset of S is an edge geodetic domination set. The maximum cardinality of all the minimal edge geodetic domination set is called UEGD number. An EGD set S in a connected graph is minimal CEGD set if no proper subset of S

Abstract. In 1995, A.A. Nasef and T. Noiri [6] introduced the notion of strongly  - irresolute functions. In the present paper, we generalize this notion to the setting of bitopological spaces and obtain some characterizations and properties of pairwise strongly semi-preirresolute functions. AMS Mathematics Subject Classifications (2010): 54E55, 54A05, 54C10, 54D05. Key words and phrases: semi-preopen, (i, j)-semi-preopen, semi-preirresolute, pairwise strongly semi-preirresolute. 1. Introduction

I'm looking forward to helping pull together a White House Math Initiative. Are you available to join a call the week of July 11 (next week) or the week of July 18 (following week) to discuss what such an initiative might look like? The best time for me would be between 9 a.m. - 12 noon EDT. After receiving an invitation from Megan Smith in April 2016 to come to DC for the summer to upgrade math learning for the country, I’ve been thinking about and brainstorming ideas with about a dozen math

The Open Table is an alternative thought provoking event that happens on the second and fourth Sunday’s of the month at my church Second Presbyterian. The alternative service began in January of 2015 and has since thrived with people from all walks of life. The worship leader who organizes each Open Table Nick Pickrell, advertises it in the newsletter as; “A community where hospitality and conversation happen.” I can corroborate his statement by sharing about my last time at the open table. I last

Dinner was ready. The food smelled had a strong scent of chicken, which was funny since it was fish not chicken, but Albert couldn’t eat. He raced off to his room with a platter of food. Albert is just too busy, and he had work to do. He looked down at the new set of problems he had to finish. “For some positive integers P, there is a quadrilateral ABCD with positive integer side lengths, perimeter P, right angles at B and C, AB = 2 and CD = AD. How many different values of P < 2015 are possible

Memory Match The first player chooses a card and carefully turns it over. Be sure not to bother the surrounding cards. The player then selects another card and turns it over. If the two cards are a matching pair then the individual takes the two cards and starts a stack. If the player makes a match he/she goes anew. The next player chooses a card. If it is a match for one of the cards that was previously flipped over, then the player tries to remember where the matching card is and turns it over

for each whole number. Once I add up the whole numbers, I have 95 out of my 100 seats spoken for. The remaining seats need to be assigned out by the highest fractional value of each

apportionment problem arises due to the rounding problem. In formal statement, apportionment problem involves a group of states with some populations (p1, p2, …, p3), and a whole number of a seats to distribute. Apportionment distributes a whole number of seats to each state where the sum of the distributions equal to the total number of seats (Young 2004). It is expected that each state gets their