@prefix foaf:	<http://xmlns.com/foaf/0.1/> .
@prefix wikipedia-en:	<http://en.wikipedia.org/wiki/> .
@prefix dbr:	<http://dbpedia.org/resource/> .
wikipedia-en:Focal_surface	foaf:primaryTopic	dbr:Focal_surface .
@prefix dbo:	<http://dbpedia.org/ontology/> .
dbr:BKL_singularity	dbo:wikiPageWikiLink	dbr:Focal_surface .
dbr:Catastrophe_theory	dbo:wikiPageWikiLink	dbr:Focal_surface .
dbr:Sphere	dbo:wikiPageWikiLink	dbr:Focal_surface .
dbr:Sergey_Degayev	dbo:wikiPageWikiLink	dbr:Focal_surface .
dbr:Dupin_cyclide	dbo:wikiPageWikiLink	dbr:Focal_surface .
<http://dbpedia.org/resource/Ridge_(differential_geometry)>	dbo:wikiPageWikiLink	dbr:Focal_surface .
@prefix owl:	<http://www.w3.org/2002/07/owl#> .
dbr:Focal_surface	owl:sameAs	<http://de.dbpedia.org/resource/Brennfl\u00E4che_(Geometrie)> .
@prefix wikidata:	<http://www.wikidata.org/entity/> .
dbr:Focal_surface	owl:sameAs	wikidata:Q5463861 ,
		dbr:Focal_surface .
@prefix yago-res:	<http://yago-knowledge.org/resource/> .
dbr:Focal_surface	owl:sameAs	yago-res:Focal_surface ,
		<http://rdf.freebase.com/ns/m.02ps7wx> ,
		<https://global.dbpedia.org/id/4jyzW> .
@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
dbr:Focal_surface	rdfs:label	"Focal surface"@en ,
		"Brennfl\u00E4che (Geometrie)"@de .
@prefix dct:	<http://purl.org/dc/terms/> .
@prefix dbc:	<http://dbpedia.org/resource/Category:> .
dbr:Focal_surface	dct:subject	dbc:Surfaces ;
	foaf:depiction	<http://commons.wikimedia.org/wiki/Special:FilePath/Focal_surface.png> ,
		<http://commons.wikimedia.org/wiki/Special:FilePath/Hyperbolic_umbilic_focal_surface.png> ,
		<http://commons.wikimedia.org/wiki/Special:FilePath/Elliptical_umbilic_focal_surface.png> ,
		<http://commons.wikimedia.org/wiki/Special:FilePath/Brennflaeche-hp-def.svg> .
@prefix prov:	<http://www.w3.org/ns/prov#> .
dbr:Focal_surface	prov:wasDerivedFrom	<http://en.wikipedia.org/wiki/Focal_surface?oldid=1270551096&ns=0> .
@prefix gold:	<http://purl.org/linguistics/gold/> .
dbr:Focal_surface	gold:hypernym	dbr:Spheres ;
	foaf:isPrimaryTopicOf	wikipedia-en:Focal_surface ;
	dbo:wikiPageWikiLink	dbc:Surfaces ,
		dbr:Sphere ,
		dbr:Cuspidal_edge ,
		<http://dbpedia.org/resource/File:Brennflaeche-hp-def.svg> ,
		<http://dbpedia.org/resource/File:Focal_surface.png> ,
		dbr:Channel_surface ,
		dbr:Principal_curvature ,
		dbr:Gaussian_curvature ,
		dbr:Surface_normal ,
		dbr:Focal_conics ,
		dbr:Confocal_quadrics ,
		<http://dbpedia.org/resource/Surface_(mathematics)> ,
		dbr:Multiplicative_inverse ,
		dbr:Dupin_cyclide ,
		dbr:Torus ,
		dbr:Evolute ,
		<http://dbpedia.org/resource/Focus_(optics)> ,
		dbr:Curvature_line ,
		<http://dbpedia.org/resource/Ridge_(differential_geometry)> ,
		<http://dbpedia.org/resource/File:Hyperbolic_umbilic_focal_surface.png> ,
		<http://dbpedia.org/resource/File:Elliptical_umbilic_focal_surface.png> ,
		dbr:Umbilical_point ,
		dbr:Curvature_sphere ,
		dbr:Surface_of_revolution ,
		dbr:Osculating_curve ,
		dbr:Tangent .
@prefix dbp:	<http://dbpedia.org/property/> .
@prefix dbt:	<http://dbpedia.org/resource/Template:> .
dbr:Focal_surface	dbp:wikiPageUsesTemplate	dbt:Citation ,
		dbt:Reflist ;
	dbo:thumbnail	<http://commons.wikimedia.org/wiki/Special:FilePath/Brennflaeche-hp-def.svg?width=300> .
dbr:Focal_conics	dbo:wikiPageWikiLink	dbr:Focal_surface .
dbr:Umbilical_point	dbo:wikiPageWikiLink	dbr:Focal_surface .