Tenpō 15 (1844) – Sanpō Hayagatten (算法早合点), Complete in One Volume Illustrated Japanese Mathematics Book (Jinkōki tradition) 86 pages | Hanshibon format | With original title slip and secondary title slip Offered here is an original Edo-period mathematical book, Sanpō Hayagatten (算法早合点), published in Tenpō 15 (1844). This work belongs to the famous Jinkōki lineage, which introduced and popularized Wasan (traditional Japanese mathematics) among common people during the Edo period. What makes this volume especially appealing is its abundant woodblock illustrations, which visually explain calculation methods, word problems, and everyday mathematical applications. These lively scenes depict merchants, travelers, laborers, and domestic life, vividly demonstrating how mathematics was integrated into daily Edo society. Japan developed a highly sophisticated mathematical culture independently from the West, and Wasan represents one of the most remarkable achievements of pre-modern Japanese science. This book stands as a valuable historical document, clearly illustrating the advanced numerical literacy of ordinary people in the late Edo period. Details Title: Sanpō Hayagatten (算法早合点) Year: Tenpō 15 (1844) Format: Hanshibon (half-size book) Pages: 86 pages, complete Binding: Original woodblock-printed book Includes original title slip and secondary title slip Text and illustrations printed from woodblocks Condition As expected for a genuine Edo-period book, there is some age-related wear, including minor paper loss, stains, and general toning. No critical damage affecting readability. Please bid only if you understand and accept the condition of an antique book. This is an excellent reference for collectors, researchers, and institutions interested in: Wasan (Japanese mathematics) Jinkōki-related works Edo-period education Japanese intellectual and social history Woodblock-printed books A rare opportunity to own a tangible example of Japan’s mathematical heritage. ■ important notice - please read before bidding do not bid if you do not intend to complete the purchase and make payment. we do not ship knives to the united kingdom due to uk law. we do not ship to the united states or canada. bids that violate these conditions will be cancelled. ● important notice regarding payment do not bid if you do not intend to complete the purchase and make payment. please place a bid only if you fully intend to complete the purchase and make payment. non-paying bidders cause serious inconvenience and delays. if payment is not completed after multiple reminders from catawiki, the order may be cancelled and handled strictly in accordance with catawiki’s policies, without exception. ● shipping restrictions - knives due to uk law and import regulations, we do not ship knives to the united kingdom. knife imports are legally restricted in the uk and shipment is not permitted. we also do not ship knives to certain other countries due to local regulations. please check your country’s import laws before bidding. bids placed in violation of these restrictions will be cancelled. ● important notice for buyers in italy due to persistent delays with the italian postal service and customs, delivery to italy may take one month or longer. please bid only if you fully understand and accept this extended delivery time. once the item has been shipped, all delays are completely beyond the seller’s control. no complaints, claims, or cancellation requests will be accepted due to slow delivery after shipment. ● important shipping restrictions united states: we do not ship to the united states. bids from the us will be cancelled. canada: due to the ongoing canada post strike, we do not ship to canada. please do not place a bid if your shipping address is in any of the above countries. ● no combined shipping this lot cannot be combined with other items. even if you purchase multiple items from the same seller in this auction, each item will be shipped separately. ● shipping method and delivery time this item will be shipped exclusively via japan post and carefully packaged. estimated delivery time is approximately 3?4 weeks, depending on the destination country and customs procedures. delivery times are estimates only and are not guaranteed. ● customs, import duties, and taxes import duties, vat, taxes, and any additional charges are not included in the item price or shipping cost. all such charges are strictly the buyer’s responsibility. the seller will not undervalue items or mark them as gifts under any circumstances. ● customs contact and returned parcels customs authorities or local delivery companies may contact you by phone or email for clearance. you are solely responsible for responding promptly. if the parcel is returned due to non-response or refusal, reshipping will require payment of double the original shipping cost. by placing a bid, you confirm that you have read, understood, and agreed to all of the above conditions.