#ifndef PERMGRP
#define PERMGRP
extern Unsigned genCount(
const PermGroup *const G, /* The permutation group. */
Unsigned *involCount) /* If nonnull, set to number of
involutory generators. */
;
extern BOOLEAN isFixedPointOf(
const PermGroup *const G, /* A group with known base and sgs. */
const Unsigned level, /* The level mentioned above. */
const Unsigned point) /* Check if this point is a fixed point. */
;
extern BOOLEAN isNontrivialGroup(
PermGroup *G) /* The permutation group to test. */
;
extern Unsigned levelIn(
PermGroup *G, /* The perm group (base and baseSize filled in). */
Permutation *perm) /* The permutation whose level is returned. */
;
extern BOOLEAN isIdentityElt(
PermGroup *G, /* The permutation group (base known). */
Permutation *perm) /* The permutation known to lie in G. */
;
extern BOOLEAN isInvolutoryElt(
PermGroup *G, /* The permutation group (base known). */
Permutation *perm) /* The permutation known to lie in G. */
;
extern BOOLEAN fixesBasicOrbit(
const PermGroup *const G,
const Unsigned level,
const Permutation *const perm)
;
extern Permutation *linkEssentialGens(
PermGroup *G, /* The permutation group. */
Unsigned level) /* Generators essential at this level are
linked. */
;
extern void assignGenName(
PermGroup *const G,
Permutation *const gen)
;
extern void adjoinInverseGen(
PermGroup *const G,
Permutation *gen) /* Must be a generator of G, and must have invImage. */
;
extern BOOLEAN depthGreaterThan(
const PermGroup *const G,
const Unsigned comparisonDepth)
;
extern BOOLEAN isDoublyTransitive(
const PermGroup *const G)
;
extern void conjugatePermByPerm(
Permutation *const perm,
const Permutation *const conjPerm)
;
extern void conjugateGroupByPerm(
PermGroup *const G,
const Permutation *const conjPerm)
;
extern BOOLEAN checkConjugacyInGroup(
const PermGroup *const G,
const Permutation *const e,
const Permutation *const f,
const Permutation *const conjPerm)
;
extern BOOLEAN isElementOf(
const Permutation *const perm,
const PermGroup *const group)
;
extern BOOLEAN isSubgroupOf(
const PermGroup *const subGroup,
const PermGroup *const group)
;
extern BOOLEAN isNormalizedBy(
const PermGroup *const group,
const PermGroup *const nGroup)
;
extern BOOLEAN isCentralizedBy(
const PermGroup *const group,
const PermGroup *const cGroup)
;
extern BOOLEAN isBaseImage(
const PermGroup *const G,
const Unsigned image[])
;
extern void reduceWrtGroup(
const PermGroup *const G,
Permutation *const h,
Unsigned *reductionLevel)
;
#endif
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