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89-math-calculator

$5,000.00

In stock

SKU

89-math-complete-sale

89-math-calculator: ten bars climb in turn toward a dashed bound while a live ticker lights under each one, animated picture

A licensed copy of the complete Mathematical Animations calculator: the page source, ten inline-SVG animations with live tickers, and a price switch that ships at zero. The live page on cri-one.com is free and open. The intellectual property stays with the inventor.

For the curious

Imagine a page where every idea has two sides: a number you can write down, and a thing in the world that makes the number true. On the left, a fact about counting or measuring — a sum, a limit, a ratio. On the right, a real object that only exists because that number describes it — a bell that rings and fades, two metal plates almost touching in a vacuum, a chip full of tiny switches that get warm when they change their minds. Ten of those pairs sit side by side on this calculator, each with a short plain-language reading and a small hand-drawn animation that shows the number in motion under the physics that carries it. The calculator lets a visitor look at the titles and the plain-language readings for free, and unlocks the moving picture and the physics paragraph for one flat purchase, once, forever, on any device the same person signs in from. What we are selling here is the whole calculator — the storefront, the pictures, the tickers under them, the checkout that unlocks them, the identity that remembers the buyer, and the brand — so a new owner turns it on and it is already running. The underlying mathematics stays with the inventor. What the buyer walks away with is the paid-viewing storefront, the ten animations, the tickers, and every piece of plumbing that lets someone anywhere in the world pay once and watch forever.

Details

Description

Details

What this is

A licensed copy of the complete Mathematical Animations calculator package. The calculator is one web page with ten cards. Each card pairs a formula with the physical thing it describes. A card carries a tag, a title, the formula, a plain-language reading, a paragraph called "the matter", a usage note, and a small animation with a live ticker under it.

"Complete" in the product name means the complete calculator is in the package. It does not mean ownership changes hands. The intellectual property, the originals and all design rights stay with Christopher Gabriel Brown.

The live page at cri-one.com/crione-math.php is free and open. Every visitor sees all ten cards in full. No sign-in. No purchase. You can look at the whole page, running, before you buy a copy. This listing sells a copy of the package, not access to that page.

What is in the package

Item | What it is The page source | One PHP file, the shipping source of 2026-10-03. It holds the ten cards, the ten animations, the ticker engine, the pause controls, the price switch, the Stripe checkout and return legs with their four guards, the signed-cookie identity helpers, the subscription-tier bridge, the login-gate helper, the SEO block and the stylesheet. Two includes | The page chrome include, which opens and closes the page. On cri-one.com the header, top navigation and footer come from two store theme templates. Those templates are not in the package; without them the include falls back to a minimal shell. The receipt mail include, which sends a receipt after a paid unlock. Its text, sender address and links are written for cri-one.com, including a refund line. Rewrite them before you switch paid viewing on. The animations | Ten hand-tuned inline-SVG animations (SVG + SMIL). Self-contained. No external dependencies. No build step. The tickers | A live "formula computing" ticker under every animation. One loop drives every live value on the page. Each card has its own pause control. The documents | Product brief, sales pitch, store listing brief, safe scope and not done, licence, tab content, manifest, runtime notes, contact info, a browser-viewable description and the product image.

The ten cards

Every card is chosen because a CRI-ONE calculator elsewhere in the portfolio uses its number as a design constraint. The animations do not implement those calculators. They show the constraint. Those calculators are not in the package.

How the price switch works

The price of viewing is a single number in the page source. The package ships with that number at zero.

Zero means free and open. Every visitor sees all ten cards in full. No sign-in. No purchase. This is how the live page on cri-one.com runs.
A positive number turns paid viewing back on. Everyone still sees each card's tag and title, a short preamble and a notice. The formula, the readings, the animation and the ticker show after a purchase. One purchase covers all ten cards.
Paid viewing runs on your own Stripe account. The checkout, the return leg, the access record and the receipt mail are already written in the source. They are switched off while the price is zero.
Four guards protect the paid path. A payment made on any other page cannot unlock this one. The paid amount must cover the current price. A payment link cannot be replayed onto a second account. The payer must be the signed-in reader.

So you can run your copy free, or paid, on your own site. This is a capability of the delivered source. It is not a revenue claim. The live page is free, and no sales history is claimed.

What is not included

The intellectual property. Nothing on this listing transfers it.
The CGB Mathematical Depositions master register. The ten cards show ten entries from it. The register stays with the inventor.
The site configuration file: Stripe keys, cookie secret, mail password.
The database and the access records.
The sign-in / arrival page.
The Magento store, including the two theme templates behind the header and footer on cri-one.com.
The sibling calculators. Each is a separate listing.
A revenue stream, exclusivity or support.

You supply your own configuration, database and sign-in page, or port the page into your own site. The page needs a configuration file and a database at runtime, in free mode too.

Licence in brief

Licensed copy. The intellectual property, the originals and all design rights stay with Christopher Gabriel Brown.
Non-exclusive. Other buyers may buy copies. The inventor's own copy keeps running on cri-one.com, free and open.
You may deploy, run and modify your copy on your own site or inside your own organisation, free or paid, with your own Stripe account.
You may not resell, redistribute, sublicense or republish the package itself, or claim authorship. The inventor's provenance line stays.
Colours and marks. The colours and stylesheet in the package may be used or restyled. The CRI-ONE and cri-one.com names and marks are not licensed.
The mathematics is not included. The copy licence covers the calculator, not the mathematics or the inventions.
Operating stance. Safe-controlled, driven by directions, no self-reproducing of material. Free mode is a deliberate, owner-directed setting. When paid viewing is switched on, the four guards must stay intact.
No warranties. Numbers in the documents are design targets, not warranties. No support obligation is promised.
USA-based buyers only. USD only.

The full terms are in the licence file in the package.

How this is delivered

This is a download. It is bought through the normal cri-one.com store checkout. The delivery zip is available from your account after the order completes. The package delivered by the download is the delivery. Nothing further follows it.

Contact. Christopher Gabriel Brown, Lawrenceville, Georgia. Public: christopher@cri-one.com. Owner: christopher@cri-one.com. Email and postal mail only. No phone. Subject line: Project 89 · Mathematical Animations · Complete Sale.

Footnotes

Product number 10317.
Family: math.
Purchase: When you buy, you buy the use of that blueprint only.

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