- Accepts Etsy gift cards
The Golden Ratio lies hidden in the humble pentagon, since it is the relationship between the side of a regular pentagon and a diagonal. So each nested pentagon is smaller the the last by a factor of 1/ϕ (approx. 1.618), which is the basis of the Fibonacci series. It's not known who first attributed this potentially infinitely continued shape to the great mathematician Pythagoras or, indeed, compared it to the shape of an ancient lute.
Designed by David Lawrence, d/dx art prints are created to order on heavyweight Canson Infinity Museum Rag produced at the centuries-old Arches paper mill in France. This superb art paper is acid-free and uses no optical brighteners to degrade over time.
Ultrachrome K3 inks provide vivid colours which will last without fading for many decades in normal conditions. The robustness of the paper makes DIY framing a simple matter and frames of the correct size are widely available.
This print is standard European A4 (210*297mm) in size and is unframed. (An A3 sized version is available as a separate listing.) It will be packed flat in a crystal envelope with cardboard stiffener and posted in a rigid protective container.
We accept credit card, debit card, etsy gift cards, and PayPal payments through Etsy.
We post items wherever possible within 2 working days. Prints are posted in rigid boxes via Royal Mail (First Class within the UK).
Just contact me within: 14 days of delivery
Ship items back to me within: 30 days of delivery
But please contact me if you have any problems with your order.
Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:
In the unlikely event that there is a flaw in your print we are happy to exchange it or refund the price on return. In the event of damage in transit, it helps if you can provide photographic or other evidence so that we can claim from Royal Mail.
The colours you are seeing on your monitor are inevitably not precisely the colours you would see if you were looking at the same design in printed form. There is simply no way around that, since the internet places limits on the range of colours that can be displayed and, even if that were not the case, every monitor is subtly (sometimes wildly!) different in the way it displays colours.
But you can be reassured that the quality of our equipment is such that colours and quality are consistent over time and the print you receive will be identical to other prints sold in galleries and art fairs to buyers who have every opportunity to handle and assess them.
Feb 21, 2021
Beautiful print, and the paper was really good quality. This was a gift for my husband who recently took up lute playing and also loves mathematics, he thought it was brilliant and we are definitely hanging this at our home. Seller was thoughtful and shipped fast, very happy overall.
Jan 3, 2021
Lovely item and quick shipping! Packaged very well. The gift was greatly received. Keep up the mathematical art!