1
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0.The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is the smallest possible difference between two distinct natural numbers.
The unique mathematical properties of the number have led to its unique uses in other fields, ranging from science to sports. It commonly denotes the first, leading, or top thing in a group. Provided by Wikipedia
141
142
Author:
Colchester, Charles Abbot, 1st Baron, 1757-1829.
Published 1861
Published 1861
Record Source:
Published Materials
Book
143
144
145
Author:
Lyttelton, George Lyttelton, 1st baron, 1709-1773.
Published 1834
Published 1834
Record Source:
Published Materials
Book
146
Author:
Dorchester, Guy Carleton, 1st Baron, 1724-1808.
Published 1890
Published 1890
Record Source:
Published Materials
Book
147
148
149
150
Creator:
Presbyterian Beneficial Union. Lodge No. 1 (Mount Carmel, Pa.)
Record Source:
Archival Materials
Manuscript
151
Author:
Denonville, Jacques René de Brisay, marquis de, d. 1
Contributors: ';
“...Marshall, O. H. 1813-1...”
Record Source:
Published Materials
Book
152
Author:
Macaulay, Thomas Babington Macaulay, 1st baron, 1800-1859.
Published 1861
Published 1861
Record Source:
Published Materials
Book
153
Author:
Wolseley, Garnet Joseph Wolseley, 1st Viscount, 1833-1913.
Published 1894
Published 1894
Record Source:
Published Materials
Book
154
Author:
Islington, John Poynder Dickson-Poynder, 1st baron, 1866-
Published 1917
Published 1917
Record Source:
Published Materials
Book
155
156
Author:
Macaulay, Thomas Babington Macaulay, 1st baron, 1800-1859.
Published 1870
Published 1870
Record Source:
Published Materials
Book
157
158
Author:
Las Cases, Emmanuel-Auguste-Dieudonné, comte de, 1766-1
Contributors: ';
“...Napoleon I, Emperor of the French, 1769-1...”
Record Source:
Published Materials
Book
159
Creator:
United States. Continental Army. New Hampshire Regiment, 1st.
Record Source:
Archival Materials
Manuscript
160
Creator:
United States. Army. Pennsylvania Light Artillery Regiment, 1st
Record Source:
Archival Materials
Manuscript