Cookie Policy

Cookie Policy for Helixium

Last updated: July 2026

Helixium (“we”, “our”, “us”) operates the blog helixium.top (the “Site”), which focuses on Applied Mathematics — from numerical methods and data science to mathematical modelling. This Cookie Policy explains what cookies are, how we use them, and your choices regarding their use. By continuing to browse the Site, you consent to the use of cookies as described in this policy.

1. What Are Cookies?

Cookies are small text files stored on your device (computer, tablet, or mobile) when you visit a website. They help the site remember your preferences, understand how you interact with content, and deliver relevant advertisements. Cookies can be “first-party” (set by the site you visit) or “third-party” (set by external services, such as analytics or ad networks).

2. Types of Cookies We Use

We use the following categories of cookies on Helixium:

Essential (Strictly Necessary) Cookies

These cookies are required for the basic functionality of the Site. They enable core features like page navigation, secure access, and load balancing. Without these cookies, the Site cannot operate properly.

• Examples: Session cookies, CSRF tokens, cookie consent state.
• Duration: Mostly session-based (deleted when you close your browser).

Analytics Cookies

We use analytics services (such as Google Analytics) to collect anonymised data about how visitors use the Site — which articles are most read, how users navigate, and where they come from. This helps us improve content and user experience. These cookies do not personally identify you.

• Examples: _ga, _gid, _gat (Google Analytics).
• Duration: Up to 2 years (depending on the cookie).

Advertising Cookies

Helixium participates in Google AdSense and may also work with other third-party ad partners. Advertising cookies are used to build a profile of your interests, show you relevant ads on the Site and across the web, and measure the performance of ad campaigns. These cookies track your visit to our Site and other sites, and may share data with advertisers.

• Examples: _gcl_au (Google AdSense), IDE (DoubleClick), test_cookie.
• Purpose: Personalise ads based on your browsing behaviour, limit how often you see an ad, and evaluate ad effectiveness.
• Duration: Typically 30 days to 13 months.

3. How Google AdSense Uses Cookies

We use Google AdSense to display advertisements. Google and its partners use cookies to serve ads based on your previous visits to our Site or other websites. For example, if you have previously read an article about linear algebra, you might see ads for related textbooks or software. These cookies also help measure ad conversions and prevent fraudulent clicks.

Google’s use of advertising cookies enables it and its partners to serve ads based on your visit to Helixium and/or other sites on the internet. You can learn more about how Google uses data when you use our Site by visiting Google’s Partner Sites Policy.

4. How to Control and Delete Cookies

You have the right to decide whether to accept or reject cookies. You can exercise your preferences in the following ways:

• Browser settings: Most browsers allow you to manage cookies through their settings. You can block all cookies, delete existing ones, or set alerts when a cookie is being set. Please note that disabling essential cookies may impact the functionality of the Site.
• Ad personalisation opt-out: To opt out of personalised advertising served by Google and other ad partners, visit Google’s Ad Settings. You can also opt out of third-party interest-based advertising through the Digital Advertising Alliance (DAA) or Your Online Choices (EU).
• Cookie consent banner: When you first visit Helixium, you will see a cookie consent banner. You can adjust your preferences (e.g., accept all, reject non-essential) at any time by clicking the “Cookie Settings” link in the footer of the Site.

5. Third-Party Cookies

Some cookies on Helixium are placed by third-party services, including:

• Google Analytics (analytics)
• Google AdSense and other ad networks (advertising)
• Embedded content from platforms like YouTube or MathJax (may set cookies for functionality)

We do not control these third-party cookies. Please review the privacy and cookie policies of these third parties for more information.

6. Privacy Policy

For more details about how we collect, use, and protect your personal data, please read our Privacy Policy. This Cookie Policy should be read together with the Privacy Policy.

7. Changes to This Policy

We may update this Cookie Policy from time to time to reflect changes in technology, regulation, or our practices. The “Last updated” date at the top of this page indicates when the policy was last revised. We encourage you to review this page periodically.

8. Contact Us

If you have any questions about this Cookie Policy or your data, please contact us:

• Email: [email protected]
• Website: helixium.top