In mathematical optimization, Himmelblau's function is a multi-modal function, used to test the performance of optimization algorithms. The function is defined by:
![](\"https://wikimedia.org/api/rest_v1/media/math/render/svg/c58cd364f39ccc8ae66ed6c693954bb44c829c62\")
{"type":"standard","title":"Second case of Sciacca","displaytitle":"Second case of Sciacca","namespace":{"id":0,"text":""},"wikibase_item":"Q3954038","titles":{"canonical":"Second_case_of_Sciacca","normalized":"Second case of Sciacca","display":"Second case of Sciacca"},"pageid":75107500,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/Castello1.jpeg/330px-Castello1.jpeg","width":320,"height":192},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/4/48/Castello1.jpeg","width":2304,"height":1384},"lang":"en","dir":"ltr","revision":"1266500432","tid":"34cf592e-c7cd-11ef-bea2-e7f400953ead","timestamp":"2024-12-31T23:16:04Z","description":"Conflict fought between noble families of Sicily, Italy","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Second_case_of_Sciacca","revisions":"https://en.wikipedia.org/wiki/Second_case_of_Sciacca?action=history","edit":"https://en.wikipedia.org/wiki/Second_case_of_Sciacca?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Second_case_of_Sciacca"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Second_case_of_Sciacca","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Second_case_of_Sciacca","edit":"https://en.m.wikipedia.org/wiki/Second_case_of_Sciacca?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Second_case_of_Sciacca"}},"extract":"The second case of Sciacca, sometimes also referred to as the third, was the concluding part of the violent conflict fought between Sicily's noble families of de Luna and Perollo between 1455 and 1529, referred to as the \"case of Sciacca.\" The main phases of the conflict were fought in the territories of the feudal town of Bivona and the demesne town of Sciacca, both current Italian municipalities in the province of Agrigento in Sicily, in the summer months of 1529.","extract_html":"
The second case of Sciacca, sometimes also referred to as the third, was the concluding part of the violent conflict fought between Sicily's noble families of de Luna and Perollo between 1455 and 1529, referred to as the \"case of Sciacca.\" The main phases of the conflict were fought in the territories of the feudal town of Bivona and the demesne town of Sciacca, both current Italian municipalities in the province of Agrigento in Sicily, in the summer months of 1529.
"}{"type":"standard","title":"Abashiri City Folk Museum","displaytitle":"Abashiri City Folk Museum","namespace":{"id":0,"text":""},"wikibase_item":"Q11607220","titles":{"canonical":"Abashiri_City_Folk_Museum","normalized":"Abashiri City Folk Museum","display":"Abashiri City Folk Museum"},"pageid":64557473,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Abashiri_City_Folk_Museum01s5.jpg/330px-Abashiri_City_Folk_Museum01s5.jpg","width":320,"height":213},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/6/6e/Abashiri_City_Folk_Museum01s5.jpg","width":4707,"height":3138},"lang":"en","dir":"ltr","revision":"1275866387","tid":"cb08f646-ebad-11ef-9579-95722542d414","timestamp":"2025-02-15T15:01:54Z","description":"Building in Hokkaidō, Japan","description_source":"local","coordinates":{"lat":44.017713,"lon":144.269104},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Abashiri_City_Folk_Museum","revisions":"https://en.wikipedia.org/wiki/Abashiri_City_Folk_Museum?action=history","edit":"https://en.wikipedia.org/wiki/Abashiri_City_Folk_Museum?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Abashiri_City_Folk_Museum"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Abashiri_City_Folk_Museum","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Abashiri_City_Folk_Museum","edit":"https://en.m.wikipedia.org/wiki/Abashiri_City_Folk_Museum?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Abashiri_City_Folk_Museum"}},"extract":"Abashiri City Folk Museum opened as Kitami Kyōdo Yakata (北見郷土舘) in Abashiri, Hokkaidō, Japan in 1936, making it one of the oldest museums on the island. When the museum opened, the collection comprised some three-thousand archaeological and ethnographic objects collected by Yonemura Yoshio (米村喜男), including items from the Moyoro Shell Mound . In 1948, the museum was transferred to the city. A new building was added in 1961 to celebrate 25 years from the original opening. Both the main building and the new building were designed by architect Tanoue Yoshiya, a pupil of Frank Lloyd Wright, and mark the transitions in his style. They are national Registered Tangible Cultural Properties.","extract_html":"
Abashiri City Folk Museum opened as Kitami Kyōdo Yakata (北見郷土舘) in Abashiri, Hokkaidō, Japan in 1936, making it one of the oldest museums on the island. When the museum opened, the collection comprised some three-thousand archaeological and ethnographic objects collected by Yonemura Yoshio (米村喜男), including items from the Moyoro Shell Mound . In 1948, the museum was transferred to the city. A new building was added in 1961 to celebrate 25 years from the original opening. Both the main building and the new building were designed by architect Tanoue Yoshiya, a pupil of Frank Lloyd Wright, and mark the transitions in his style. They are national Registered Tangible Cultural Properties.
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