- SPU: AL-R71A-8dim0p6h[7]
- Material: wooden
- Product category: wooden toys
- Is it multifunctional: No
- Applicable age: teenagers (7-14 years old)
- Category: Other educational toys
Topology( Topology) It is a branch of mathematics that emerged at the end of the 19th century and flourished rapidly in the 20th century. Topological transformations have their uses in many fields. To this day, the knowledge derived from topology has become mathematics together with modern algebra and analysis. Three pillars of theory.
The simplest concept of topology arises from direct observation of the surrounding world. Intuitively speaking, the discussion of the geometric properties of graphics is not limited to their "; Measurement” nature( Length, angle, etc.) Topology discusses the properties of various geometric shapes, but its content is different from the scope of geometry. Most discussions focus on properties that have nothing to do with size, position, and shape. For example, curves( Rope, wire, molecular chain…) No matter how long it is, it can be closed or not. If the curve is closed, it can be “ winding” It is very complicated. Two or more closed curves can be nested inside each other, and there are many types. Solids and their surfaces can be "; hole” They are allowed to expand, contract and deform at will without splitting or destroying the holes. This deformation will not reduce or increase the number of holes, so it is called "; Topological properties” .A rubber band, within its elastic limit, no matter how long or twisted it is, as long as it is not broken, it will always be a circle. Stretching changes its length, and twisting makes it change its shape. has changed, but in terms of topology, I will not pay attention to these, and just focus on "; It always has a circle” superior.
After sales information
Within 15 days from the date of receipt, customers can be provided with an unconditional return service. The application for return of goods requires the consent of the merchant in the store.
Procurement and delivery
Delivery time: For products in stock, they will be shipped within 3 working days (excluding holidays) after you place your order and make payment. You will receive our notification after shipment.
payment
Credit card payment (quick payment) is a new payment method jointly launched by third-party payment platforms and major banks. It is one of the safest and easiest payment methods. Users do not need to activate online banking in advance, they can complete quick payments by entering information such as card face and mobile phone dynamic password. Quick payment allows various bank card users to conveniently make online payments without the need for special online banking activation.
No data available
+'&media=https%3A%2F%2Fcbu01.alicdn.com%2Fimg%2Fibank%2FO1CN01VZDIGs20s590y1QzG_%21%213871106904-0-cib.jpg&description=Classical+educational+toys+based+on+topology.+Desktop+unblocking+and+unlocking+fun+decompression+toys.+Step+by+step+surprising.+Mouse+trapped+in+ladder+ring.')){kind=link}