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In the stationary situation a multilevel strategy is proposed that iteratively decreases the step size. Numerical experiments illustrate the accuracy of the approach.<\/p>","DOI":"10.1090\/mcom\/3008","type":"journal-article","created":{"date-parts":[[2015,7,21]],"date-time":"2015-07-21T15:32:43Z","timestamp":1437492763000},"page":"1033-1049","source":"Crossref","is-referenced-by-count":26,"title":["Projection-free approximation of geometrically constrained partial differential equations"],"prefix":"10.1090","volume":"85","author":[{"given":"S\u00f6ren","family":"Bartels","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"14","published-online":{"date-parts":[[2015,7,21]]},"reference":[{"issue":"5","key":"1","doi-asserted-by":"publisher","first-page":"1708","DOI":"10.1137\/S0036142994264249","article-title":"A new algorithm for computing liquid crystal stable configurations: the harmonic mapping case","volume":"34","author":"Alouges, Fran\u00e7ois","year":"1997","journal-title":"SIAM J. Numer. 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