Question: Who coined the name used for the arts movement, with whose members Lotti van der Gsag was strongly associated ?

Context paragraphs:
Van der Bellen family: The Van der Bellen family (also spelled von der Bellen or van der Bellen) is a Russian noble family of Dutch patrilineal descent.  By intermarriage and cultural assimilation it became part of the Russian-German population in the Russian Empire.  Its most famous member is Alexander Van der Bellen, the President of Austria.  Family members held high offices in the regional government of the Pskov area in Imperial Russia and the family was recognised as noble by Russian authorities in the early 19th century.  After the Russian Revolution, family members fled to Estonia and, following the Soviet invasion of that country, to Germany and Austria.

Daniël van der Stoep: Daniël Teunis van der Stoep (born 12 September 1980, Delft) is a Dutch politician who was a Member of the European Parliament (MEP) during two periods from July 2009 to August 2011 and from December 2011 to July 2014.  He was elected to the European Parliament for the Party for Freedom (PVV) at the 2009 election.  He resigned as an MEP on 17 August 2011, having caused a car crash when drunken driving, and was replaced by Auke Zijlstra.  He returned to the European Parliament on 14 December 2011, after the Treaty of Lisbon expanded the Parliament by eighteen MEPs.  It was initially disputed Patricia van der Kammen should be elected.  However, the PVV did not allow him to rejoin their delegation, and went on as an independent.  In 2012, Van der Stoep founded his own party, Article 50, with the intention of participating in the 2014 European Parliament election.  The name refers to Article 50 of the Treaty on European Union, of which the first sentence is ""Any Member State may decide to withdraw from the Union in accordance with its own constitutional requirements.""  In the 2014 European Parliament elections the party did not earn a seat; it was merged with For the Netherlands after van der Stoen's departure.

Van der Waals surface: The van der Waals surface of a molecule is an abstract representation or model of that molecule, illustrating where, in very rough terms, a surface might reside for the molecule based on the hard cutoffs of van der Waals radii for individual atoms, and it represents a surface through which the molecule might be conceived as interacting with other molecules.  Also referred to as a "van der Waals envelope," the van der Waals surface is named for Johannes Diderik van der Waals, a Dutch theoretical physicist and thermodynamicist who developed theory to provide a liquid-gas equation of state that accounted for the non-zero volume of atoms and molecules, and on their exhibiting an attractive force when they interacted (theoretical constructions that also bear his name).  van der Waals surfaces are therefore a tool used in the abstract representations of molecules, whether accessed, as they were originally, via hand calculation, or via physical wood/plastic models, or now digitally, via computational chemistry software.  Practically speaking, CPK models, developed by and named for Robert Corey, Linus Pauling, and Walter Koltun, were the first widely used physical molecular models based on van der Waals radii, and allowed broad pedagogical and research use of a model showing the van der Waals surfaces of molecules.

Lotti van der Gaag: Charlotte 'Lotti' van der Gaag (] ; 18 December 1923 – 20 February 1999) was a Dutch sculptor and painter and strongly associated with members of the COBRA arts movement.

Jan van der Vaardt: Jan van der Vaardt (name variations: Jan van der Vaart, John Van der Vaart, John Vander Vaart, Jan van der Waart) (c.1650 –1727) was a Dutch painter of portraits, landscapes and trompe-l'œil paintings and a mezzotint artist who was active in England for most of his career.

Van der Corput inequality: In mathematics, the van der Corput inequality is a corollary of the Cauchy–Schwarz inequality that is useful in the study of correlations among vectors, and hence random variables.  It is also useful in the study of equidistributed sequences, for example in the Weyl equidistribution estimate.  Loosely stated, the van der Corput inequality asserts that if a unit vector formula_1 in an inner product space formula_2 is strongly correlated with many unit vectors formula_3, then many of the pairs formula_4 must be strongly correlated with each other.  Here, the notion of correlation is made precise by the inner product of the space formula_2: when the absolute value of formula_6 is close to formula_7, then formula_8 and formula_1 are considered to be strongly correlated.  (More generally, if the vectors involved are not unit vectors, then strong correlation means that formula_10.)

Van der Pauw method: The van der Pauw Method is a technique commonly used to measure the resistivity and the Hall coefficient of a sample.  Its power lies in its ability to accurately measure the properties of a sample of any arbitrary shape, so long as the sample is approximately two-dimensional (i.e. it is much thinner than it is wide), solid (no holes), and the electrodes are placed on its perimeter.  The van der Pauw Method employs a four-point probe placed around the perimeter of the sample, in contrast to the linear four point probe: this allows the van der Pauw method to provide an average resistivity of the sample, whereas a linear array provides the resistivity in the sensing direction.  This difference becomes important for anisotropic materials, which can be properly measured using the Montgomery Method, an extension of the van der Pauw Method.

Babalú-Ayé: Babalú-Ayé is an Orisha strongly associated with infectious disease and healing.  The name Babalú-Ayé translates as “Father, lord of the Earth” and points to the authority this orisha exercises on all things earthly, including the body, wealth, and physical possessions.  In West Africa, he was strongly associated with epidemics of smallpox, leprosy, influenza, ebola, and HIV/AIDS.  Although strongly associated with illness and disease, Babalú-Ayé is also the spirit that cures these ailments.  Both feared and loved, Babalú-Ayé is sometimes referred to as the “Wrath of the supreme god” because he punishes people for their transgressions.  People hold Babalú-Ayé in great respect and avoid calling his actual name, because they do not wish to invoke epidemics.

COBRA (avant-garde movement): COBRA (or CoBrA) was a European avant-garde movement active from 1948 to 1951.  The name was coined in 1948 by Christian Dotremont from the initials of the members' home cities: Copenhagen (Co), Brussels (Br), Amsterdam (A).

Van de Ven: Van de Ven, Van der Ven and Vandeven are toponymic surnames of Dutch origin.  The original bearer may have lived or worked near a "ven", a Dutch term for a small lake, like fen ("veen" in Dutch) derived from the Proto-Germanic fanją.  Van der Plas and Van der Poel are equivalent Dutch surnames.  The name (in the form of van den Venne) can be found as early as the first part of the 14th century in Oirschot.  The name is quite common in the Netherlands, ranking 41st in 2007 (16,282 people).  People with this surname include:

Supporting paragraphs: Lotti van der Gaag COBRA (avant-garde movement)
Answer: Christian Dotremont