## Discovery Education: Digital Textbooks & Education Resources

**C**reati**ng** equitable, e**ng**a**g**i**ng** lear**n**i**ng** e**x**perie**nc**es ma**y** be the bi**gg**est **c**halle**ng**e
, but it als**o** has the bi**gg**est reward. That's wh**y** Dis**co**ver**y** Edu**c**ati**on** is **co**mmitted t
**o** helpi**ng yo**u ever**y** step **of** the wa**y**. We bri**ng** the m**o**st releva**n**t, authe**n**ti**c**, a**n**d ...

## A high-conductivity **n** -type polymeric ink for printed electronics ...

21 Apr 2021 **...** The development **of n**-type conductive polymer inks is critical for the development
**of** next-generation opto-electronic ... We carried out grazing-incidence wide-
angle **X**-ray scattering (GIWAXS) to determine the microstructure **of** the ... **of** BBL,
PEIlin, and BBL:PEIlin films. **f N**(1s) XPS analysis **of** BBL, PEIlin, and BBL:PEIlin (
50 wt% PEI) films. **g**–j Atomic force ... Because **of** the high density **of** electron-
donating secondary amine groups **in** PEI, a 5 min treatment at 150 °**C** is ...

## Clinical Characteristics **of** Coronavirus Disease 2019 **in** China

**N** Engl J Med. 2020 Apr 30;382(18):1708-1720. doi: 10.1056/NEJMoa2002032.
Epub 2020 Feb 28. ... Affiliated Taihe Hospital **of** Hubei University **of** Medicine,
Shiyan (J. Luo), and Xiantao First People's Hospital, Xiantao (**C.Y.**) - all **in** China.

## 電力・ガス取引監視等委員会

電力・ガス取引監視等委員会のホームページです。

## Geometric mean - Wikipedia

**In** mathematics, the geometric mean is a mean or average, which indicates the
central tendency or typical value **of** a set **of** numbers by using the ... Construction
of the geometric mean: l g {\displaystyle l_{g}} l_{g} ... The geometric mean is
defined as the **n**th root **of** the product **of n** numbers, i.e., for a set **of** numbers **x**1, **x**
2, ..., **xn**, the ... **x**} and **y** {\textstyle **y**} {\textstyle **y**} . ... and normalizing by **C's** result
gives **C** as the fastest computer according to the arithmetic mean but A as the
fastest ...

## Factorial - Wikipedia

**In** mathematics, the factorial **of** a non-negative integer **n**, denoted by **n**!, is the
product **of** all positive integers less than or equal to **n**: **n** ! = **n** ⋅ ( **n** ... Γ(**x** + 1),
where Γ is the gamma function; this is undefined when **x** is a negative integer. ...
Siddhānta Shiromani by Bhāskara II (**c**. 1114–1185) mentioned ... sum _{**x**=1}.
The graph **of** the function **f**(**n**) = ln **n**! is shown **in** the figure on the right. ... The grid
covers the range −3 ≤ **x** ≤ 3, −2 ≤ **y** ≤ 2, with unit steps. ... **n**, **gn**,
Approximation. 0, 1, 1.

## Symmetric group - Wikipedia

**In** abstract algebra, the symmetric group defined over any set is the group whose
elements are all the bijections from the set to itself, and whose ... **In** the theory **of**
Coxeter groups, the symmetric group is the Coxeter group **of** type A**n** and occurs
as the Weyl group **of** the general linear group. ... The composition **f** ∘ **g of**
permutations **f** and **g**, pronounced "**f of g**", maps any element **x of X** to **f**(**g**(**x**)).
Concretely ...

## Concave function - Wikipedia

**In** mathematics, a concave function is the negative **of** a convex function. A
concave function is also synonymously called concave downwards, concave
down, convex upwards, convex cap, or upper convex. Contents. 1 Definition; 2
Properties. 2.1 Functions **of** a single variable; 2.2 Functions **of n** variables ... **f**(**x**))
and ( **y** , **f** ( **y** ) ) {\displaystyle (**y**,**f**(**y**))} {\displaystyle (**y**,**f**(**y**))} ... If its second
derivative is negative then it is strictly concave, but the converse is not true, as
shown by **f**(**x**) = −**x**^{4}. 4.

## 株式会社コムニコ｜SNS運用代行・コンサルティング実績多数の ...

株式会社コムニコは、Twitter、Instagram、Facebookなどを中心に、SNS活用 における戦略策定から運用代行・コンサルティングを行うSNS専門 エージェンシーです。炎上対策、勉強会（セミナー）、SaaSツールの提供なども 行なってい ...

## Welcome to Python.org

The official home **of** the Python Programming Language.