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The quaternionic field equations offer Template:Font order partial differential equations
χ=∇*φ=∇*∇ψ=∇∇*ψ=(∇r−∇→)(φr+φ→)=(∇r+∇→)(∇r−∇→)(ψr+ψ→)=⊡ ψ=(∇r∇r+⟨∇→,∇→⟩)ψ This equation splits into Template:Font order partial differential equations
χ=∇*φ
φ=∇ψ
ζ=◻ ψ=(∇r∇r−⟨∇→,∇→⟩)ψ is the Template:Font Template:Font
◻ is the Template:Font version of Template:Font operator
The Template:Font versions of both second order differential equations offer Template:Font as part of their Template:Font These shock fronts occur in Template:Font Separate shock fronts cannot be observed
The Template:Font d'Alembert's equation offers Template:Font as part of its solutions
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