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abudnikov.ru

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Website abudnikov. ru - mathematics without unnecessary rigor, but with soulHere it is - an online resource where mathematics ceases to be something scary and distant. On the website...

Page analyze update date: 2026/05/28 10:06:37
Last whois update date: 2026/03/14 18:07:42
Domain Status
Registered
Paid till
31.12.2026
Available from
31.01.2027

Website Description

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Website abudnikov. ru - mathematics without unnecessary rigor, but with soul

Here it is - an online resource where mathematics ceases to be something scary and distant. On the websiteabudnikov. rueverything looks as if it were from real life, as if someone wanted to talk about mathematics in simple language, without panic and painful tension. No, there is no rigid theory here. No axioms. No evidence. Not even a complete justification for each step. Well, maybe that's good? Who knows.

Each section of the site is like a conversation with a friend. Sometimes humorous, sometimes serious. Looking at the main page, you can immediately see: the author does not want to be correct. He does not strive for absolute accuracy. On the contrary, he tries to make the material accessible. Especially for those who are just beginning to understand what an equation or logarithm is. Yes, it may seem unprofessional. But not everyone wants to start with definitions and theorems. Many people just want to understand.

What can be found on abudnikov. ru?

  • Expressions in mathematics - namely their transformations. Identical transformations, isolation of a perfect square, factorization. All this is presented as if you already understand a little bit.
  • Degrees and roots. How they work, how to simplify expressions. And nothing extra. Just practice.
  • Equations, from simple linear to exponential. There is even something about ODZ - it seems like a trifle, but without it it’s easy to get confused.
  • Text problems- yes, the ones that scare you. Here they are solved step by step, without haste.
  • Inequalitiesand numerical intervals. Again, the emphasis is on understanding rather than on a formal approach.
  • Progressions, trigonometry, logarithms - everything you need to know to feel confident.
  • There is also a section for students: mathematical analysis, set theory, integral calculus, linear algebra. But again - without being too strict.
  • And of course, preparation for the Unified State Exam, especially problems with parameters and number theory. Many people are afraid of these tasks - here they will try to explain it differently.

The author of the site says directly: If you want complete rigor, you don’t need to come here. It's fair. He admits that his approach may not be suitable for those accustomed to an academic style. And this is not a mistake. It's a choice. The choice to convey an idea without getting bogged down in terms.

It seems that he wants everyone who looks at the site to say to themselves: Oh! And I can understand that. You don’t have to become a professor, but at least stop being afraid. After all, many simply do not know where to start. And here is the way. Step by step. No pressure. Sometimes even with humor. For example, when they write: Logarithmic equations - basics or Operations with logarithms. Let's get our hands on it! Sounds like an invitation, not a tutorial.

But why such a style then?

After all, everything could have been made more strict. It was possible to add formulas, evidence, links to sources. But no. Instead - live text. Human. With conversational turns. With errors. With repetitions. With a thought that keeps coming back, as if the author was testing himself. It works. Because it feels like the person here is not just making a website, but wants to help.

And yes, there is a section about printing booklets and a catalog of diplomas. Perhaps this is an additional source of income. But this does not affect the main content. Mathematics remains the main thing. And it is presented the way those who are just starting their journey would like to see it.

Frequently asked questions about the abudnikov website. ru

Who created the site abudnikov. ru?

The site belongs to one of those who decided to explain mathematics differently. The author is Abudnikov, judging by the domain name. There is no official company or legal entity here; most likely this is an individual project.

Is the site working now?

Yes, judging by the contents of the page, it is active and accessible. There are no signs that it has been sold, blocked or turned off. On the contrary, the information is updated and structured.

Why is there no rigor on the site?

The author says directly: if you need complete academic accuracy, don’t come here. He opts for clarity. His goal is to help beginners, not to intimidate them with theory.

Where can I contact the author?

There are no contacts in the text of the site. No mail, no phone, no social networks. Most likely, the author prefers to remain in the shadows.

Is this an online textbook?

No, not really. This is more like a live blog, where topics from school and university mathematics are discussed, but without a formal approach. Suitable for those who just want to understand.

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SEO Score
71.23%
104
Score achieved
146
Maximum score

Main Information

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Title: Главная | О математике понятно
Description: unknown
Keywords: Unknown
Page Encoding: utf-8
Page Filesize: 31 KB

Server Information

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IP: 91.240.87.231
Location: Russia,RU,St Petersburg,194362,60.0842,30.2703,Europe/Moscow
Http Server: nginx
Encoding: utf-8

Meta Tags List

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Internal Links

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External Links

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Whois Information

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domain_name: abudnikov.ru
update_date: on
update_time:
creation_date: 2020-12-31T14:02:42Z
creation_time: 1609423362
expiration_date: 2026-12-31T14:02:42Z

Whois Raw Data

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            domain:        ABUDNIKOV.RU
nserver: pns1.cloudns.net.
nserver: pns2.cloudns.net.
nserver: pns3.cloudns.net.
nserver: pns4.cloudns.net.
state: REGISTERED, DELEGATED, VERIFIED
person: Private Person
registrar: REGRU-RU
admin-contact: http://www.reg.ru/whois/admin_contact
created: 2020-12-31T14:02:42Z
paid-till: 2026-12-31T14:02:42Z
free-date: 2027-01-31
source: TCI
Last updated on 2026-03-14T18:03:01Z

Robots.txt

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			User-agent: *
Allow: /
Sitemap: https://abudnikov.ru/sitemap.xml
Host: https://abudnikov.ru
        

SEO Audit

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Technical SEO

Response Code
200
Status 200 OK - page loads correctly.
Character Encoding
Page: utf-8, Header: utf-8
Character encoding consistent between HTML and headers.
Page Size
31899 bytes
Page size acceptable for fast loading.
Resources
17 total
Optimal number of resources.
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
Robots.txt
Exists
Robots.txt file found.
Sitemap
Declared in robots.txt
Sitemap declared in robots.txt.
HTTPS
Yes
Secure HTTPS connection enabled.
Compression
gzip
Gzip or Zstd compression enabled for faster loading.
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Caching
Not set
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Page Speed
1.81 ms
Excellent loading speed.

On-Page SEO

Title
Главная | О математике понятно
Good title length (30-60 characters).
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Meta Description
unknown Lenght:7
Meta description too short. Expand to 100-160 characters.
H1 Heading
1 found - "Главная"
Good - single H1 heading found.
Word Count
695
Good content length (500-2000 words recommended).
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
Duplicate Meta
[]
No duplicate meta tags found.
Keywords
Unknown
Meta keywords set (note: not used by major search engines).

Content and UX

Language
ru
Language attribute properly set.
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Images
2 total, 1 missing ALT
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Viewport
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Open Graph
Missing: og:title, og:description, og:image, og:url
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Structured Data
0 JSON-LD scripts
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Positions in Google

Search Phrases - Google

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Position Phrase Page Snippet
1расстояниях а б в рисунок/ege/chast-2.2/zadac...
1работа с логарифмами/shkolnikam/logarifm...
1функции под/studentam/matematic...
1решения заданий с развернут/ege/chast-2.2/
2формула го члена/shkolnikam/posledov...
2формула n го члена/shkolnikam/posledov...
2(-1)через другую/shkolnikam/uravneni...
2(-1)найти градусы на окружности/shkolnikam/trigonom...
3решение задач методом оценки/ege/chast-2.2/zadac...
3(+4)формулу го члена арифметической/shkolnikam/posledov...

Positions in Yandex

Search Phrases - Yandex

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Position Phrase Page Snippet
1функции под/studentam/matematic...
21 2 3 4 5 n/shkolnikam/posledov...
2d 4 5 1/shkolnikam/posledov...
3n 1 n 2/shkolnikam/posledov...
34 n 2 n 1/shkolnikam/posledov...
3d 6 4 1 5/shkolnikam/posledov...
5как найти 1/shkolnikam/posledov...
5b 1 равен 2/shkolnikam/posledov...
53 n 5 n 1/shkolnikam/posledov...
6сумма 1 членов последовательности/shkolnikam/posledov...

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