### Re: [NTG-context] Nabla operator appears italic in formula

On 3/23/2013 9:34 PM, Xenia wrote: Dear context list, using the nabla symbol ∇ in formulas, I wondered why it looks italic and not upright as for example in [1]. I attach an example. Because that's how it's defined in math italics ... is nabla always supposed to be upright in standard math italic mode? (I'll change the \nable definition to \unexpanded\def\nabla{∇}.) Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___

### Re: [NTG-context] Nabla operator appears italic in formula

On 24 mars 2013, at 11:24, Hans Hagen pra...@wxs.nl wrote: On 3/23/2013 9:34 PM, Xenia wrote: Dear context list, using the nabla symbol ∇ in formulas, I wondered why it looks italic and not upright as for example in [1]. I attach an example. Because that's how it's defined in math italics ... is nabla always supposed to be upright in standard math italic mode? (I'll change the \nable definition to \unexpanded\def\nabla{∇}.) Hans Hi, \nabla should be italic if all other math greek symbols, like \Omega, \Gamma, \sum, ect are set in italic. Otherwise \nabla and all such symbols should be upright. Would it be possible to make this optional in math italics, something like \setupmathematics[mathsymbols=italic] or \setupmathematics[mathsymbols=upright] Maybe this should be set when one chooses the greek letters to be italic or upright in mathematics. Best regards: OK ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___

### Re: [NTG-context] Nabla operator appears italic in formula

On 3/24/2013 12:23 PM, Otared Kavian wrote: On 24 mars 2013, at 11:24, Hans Hagen pra...@wxs.nl wrote: On 3/23/2013 9:34 PM, Xenia wrote: Dear context list, using the nabla symbol ∇ in formulas, I wondered why it looks italic and not upright as for example in [1]. I attach an example. Because that's how it's defined in math italics ... is nabla always supposed to be upright in standard math italic mode? (I'll change the \nable definition to \unexpanded\def\nabla{∇}.) Hans Hi, \nabla should be italic if all other math greek symbols, like \Omega, \Gamma, \sum, ect are set in italic. Otherwise \nabla and all such symbols should be upright. Would it be possible to make this optional in math italics, something like \setupmathematics[mathsymbols=italic] or \setupmathematics[mathsymbols=upright] Maybe this should be set when one chooses the greek letters to be italic or upright in mathematics. That is already there \setupmathematics [lcgreek=italic, ucgreek=normal] (normal, italic, none) I've added sygreek so that one can also influence the nable and differential (default normal). I tested with: \starttext \startTEXpage \startlines \type{--}: \mathematics{\nabla \phi = ∇ ϕ = 0} \type{it}: \mathematics{\it \nabla \phi = ∇ ϕ = 0} \type{bf}: \mathematics{\bf \nabla \phi = ∇ ϕ = 0} \type{bi}: \mathematics{\bi \nabla \phi = ∇ ϕ = 0} \type{tf}: \mathematics{\tf \nabla \phi = ∇ ϕ = 0} \blank \type{--}: \mathematics{\mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{it}: \mathematics{\it \mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{bf}: \mathematics{\bf \mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{bi}: \mathematics{\bi \mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{tf}: \mathematics{\tf \mathgreekupright \nabla \phi = ∇ ϕ = 0} \blank \setupmathematics[sygreek=italic] \type{--}: \mathematics{\nabla \phi = ∇ ϕ = 0} \type{it}: \mathematics{\it \nabla \phi = ∇ ϕ = 0} \type{bf}: \mathematics{\bf \nabla \phi = ∇ ϕ = 0} \type{bi}: \mathematics{\bi \nabla \phi = ∇ ϕ = 0} \type{tf}: \mathematics{\tf \nabla \phi = ∇ ϕ = 0} \stoplines \stopTEXpage \stoptext Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___

### Re: [NTG-context] Nabla operator appears italic in formula

On 24.03.2013 15:17, Hans Hagen wrote: On 3/24/2013 12:23 PM, Otared Kavian wrote: On 24 mars 2013, at 11:24, Hans Hagen pra...@wxs.nl wrote: On 3/23/2013 9:34 PM, Xenia wrote: Dear context list, using the nabla symbol ∇ in formulas, I wondered why it looks italic and not upright as for example in [1]. I attach an example. Because that's how it's defined in math italics ... is nabla always supposed to be upright in standard math italic mode? (I'll change the \nable definition to \unexpanded\def\nabla{∇}.) Hans Hi, \nabla should be italic if all other math greek symbols, like \Omega, \Gamma, \sum, ect are set in italic. Otherwise \nabla and all such symbols should be upright. Would it be possible to make this optional in math italics, something like \setupmathematics[mathsymbols=italic] or \setupmathematics[mathsymbols=upright] Maybe this should be set when one chooses the greek letters to be italic or upright in mathematics. That is already there \setupmathematics [lcgreek=italic, ucgreek=normal] (normal, italic, none) I've added sygreek so that one can also influence the nable and differential (default normal). I tested with: \starttext \startTEXpage \startlines \type{--}: \mathematics{\nabla \phi = ∇ ϕ = 0} \type{it}: \mathematics{\it \nabla \phi = ∇ ϕ = 0} \type{bf}: \mathematics{\bf \nabla \phi = ∇ ϕ = 0} \type{bi}: \mathematics{\bi \nabla \phi = ∇ ϕ = 0} \type{tf}: \mathematics{\tf \nabla \phi = ∇ ϕ = 0} \blank \type{--}: \mathematics{\mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{it}: \mathematics{\it \mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{bf}: \mathematics{\bf \mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{bi}: \mathematics{\bi \mathgreekupright \nabla \phi = ∇ ϕ = 0} \type{tf}: \mathematics{\tf \mathgreekupright \nabla \phi = ∇ ϕ = 0} \blank \setupmathematics[sygreek=italic] \type{--}: \mathematics{\nabla \phi = ∇ ϕ = 0} \type{it}: \mathematics{\it \nabla \phi = ∇ ϕ = 0} \type{bf}: \mathematics{\bf \nabla \phi = ∇ ϕ = 0} \type{bi}: \mathematics{\bi \nabla \phi = ∇ ϕ = 0} \type{tf}: \mathematics{\tf \nabla \phi = ∇ ϕ = 0} \stoplines \stopTEXpage \stoptext Great, thank you! ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___