On gloss:

mu'erpau in sense "level"
x1=p1 is a level / world / mini-world / map / world-part / universe, of universe x2=p2=m1, with domain / sphere x3=m2 (for x1) characterized by / defined by rules x4=m3 (for x1), with parent universe of domain / sphere x5 (for x2) characterized by / defined by rules x6 (for x2)).
tumcartu in sense "visual representation of an area"
x1=c1 is a map of terrain/area/planet x2=c2=t1 showing formation x3=c3
menkini in sense "function (pluralities)"
x1 are the result of mapping x2 using function x3 (2-ary ka)
smapiri in sense "correspondence between sets/classes"
x1 is a morphism from x2 to x3.

On affix form:

mapku
x1 is a cap/hat/crown/helmet/piece of headgear [head-top garment] of material x2.

In definition:

cartu
x1 is a chart/diagram/map of/about x2 showing formation/data-points x3.
fancu
x1 is a function/single-valued mapping from domain x2 to range x3 defined by expression/rule x4.
catcku
x1 is an atlas (book of maps) containing x2
dubyfancu
f1 is an identity function/single-valued mapping from domain f2 to range f3
mekfancu
x1 is an operator/mathematical function/single-valued mapping from domain x2 to range x3 defined by mathematical expression/rule x4.
tedmre
m1 surveys t1=m2 as m3 (map or measurements) in unit m4 with accuracy m5
tumymre
m1 surveys t1=m2 as m3 (map or measurements) in unit m4 with accuracy m5
facni
x1 is an n-ary operator/map which is distributive/linear/homomorphic in or over or from space/structure x2, mapping to space or structure x3, thereby producing a new space/structure x4 which is the 'union' of x2 and x3 endowed with x1; x1 distributes over/through all of the operators of x2.
ci'ai'u (exp!)
Mekso unary or binary operator: n-set or integer interval; in unary form, it maps a nonnegative integer X1 = n to the set \1, \dots , n\ (fully, officially, and precisely: the intersection of (a) the set of exactly all positive integers with (b) the closed ordered interval [1, n] such that n \geq 1; see notes for other n); in binary form, it maps ordered inputs (X1, X= (m, n) to the intersection of (a) the set of exactly all integers with (b) the closed ordered interval [m, n].
fa'au (exp!)
mathematical unary operator: map notation
fau'au (exp!)
two-tier function map/assignment writer notation: X1 (ordered list, no repetitious terms) maps termwise-respectively to X2 (ordered list; may be repetitious but must have exactly as many terms as X1)
ji'i'u (exp!)
mekso, at-most-5-ary operator: a rounding function; ordered input list is (x,n,t,m,b) and the output is sgn(x) bt roundn (b(-t) abs(x)), with rounding preference n and where the fractional part of b(-t) abs(x) being equal to 1/2 causes the roundn ( ) function to map b(-t) abs(x) to the nearest integer of form 2Z+m, for base b (determined by context if not explicitly input) and some integer Z (determined by context).
mai'u'ei (exp!)
mekso unary operator: Levi-Civita symbol; for input n-tuple (a1, a ... , an), where n is a strictly positive integer, the output is \varepsilona, where \varepsilon is the Levi-Civita symbol under the convention of mapping (1, 2, ..., n) to 1.
va'au'au (exp!)
Binary mekso operator: group-theoretic conjugation (group action): maps inputs (X1, X to X2^(-X= \phi(X. Default: X3 = 1.
kerneli
x1 (set) is the set of all points/input values in the domain of function x2 such that that function (x2) maps them to 0.
peglfi
x1 is a PEG rule that consumes the same input as x3, but produces the output of x3 mapped with function x2
pirnmipmepi
x1 is a mip map of source image x2 with downsized images x3.
prixaja
x1 (curling angular-direction) is a quantity expressed angularly with direction (counter)clockwise and which maps to (pseudo)vector x2 (Cartesian direction) via rule/convention x3
puvrmipmepi
x1 is mip-mapping (process).
sizrmipmepi
x1 is mip-mapping (concept thereof).
stodraunju
x1 is a function mapping x2 (domain) to x3 (codomain) such that properties x4 (ka) of x2 are preserved in its image under x1 according to the rules/operations/relations of x3 corresponding to those of x2 by x1.
tsautu
x1 (entity) is a sketch, draft, outline, preliminary sketch, rough draft, rough sketch, sketch map, sketch plan of x2 (entity)
umre
x1 (set) is measurable and has measure x2 (li; non-negative real number or possibly positive infinity) by measure x3 in space/dimensionality/under conditions x4; x2 is the x3 measure of set x1 in space x4; x3 is a measure which is defined on some class of measurable sets in x4 such that it maps x1 to x2

In notes:

nonsmi
x1 is the zero(-like)/additive identity of structure/ring x2; often is denoted by ' 0R ' (for structure/ring R, specified by x2) or by '0' when context is obvious
pavysmi
x1 is the one(-like) element/multiplicative identity of structure/ring x2; often is denoted by ' 1R ' or ' IR ' or by (when context is obvious) '1' or 'I', for structure/ring R (given by x2).
treicytunba
x1 is of the same rank/generation in hierarchical structure x2 by standard/partial ordering/relationships x3.
grafu
x1 is the graph on vertices/nodes x2 (set) and edges x3 (set of ordered or unordered 2-tuples of vertices in x2) and with additional properties x4.
nicfa
x1 (vector) is the displacement of x2 (object/point) relative to x3 (object/point; contextless default: origin) in coordinate system/frame of reference/as measured by x4 according to definition/standard/(meta)physics x5
be'ei'oi (exp!)
ternary mekso operator: x1th Bergelson multiplicative interval with exponents bounded from above by function x2 and with sequence of shifts x3, where exponents belong to set x4
ja'oi (exp!)
permutation cycle writer notation start
kei'ai
mekso style converter: elementwise application of operator
mai'u (exp!)
unary mekso operator: signum function
mai'u'au (exp!)
unary mekso operator: parity of function; if the input is a unary real-valued function X1 which is defined on a subset of the reals, then the output is 1 is X1 is even, -1 if X1 is odd, and 0 otherwise.
po'i'oi (exp!)
mekso at-most-3-ary operator: convert to polynomial; X1 (ordered list of algebraic structure (probably field) elements) forms the (ordered list of) coefficients of a polynomial/Laurent-like series with respect to indeterminate X2 under ordering rule X3 (default for finite list: the first entry is the coefficient of the highest-degree term and each subsequent entry is the next lesser-degree coefficient via counting by ones and wherein the last entry is the constant term)
ru'ei (exp!)
n-ary operator: n-ary magma/group/ring operator a*b = ab`
vi'oi'au (exp!)
mekso unary operator: the set of all fixed points of function a
xi'ei
binary mekso operator: for ordered list X1, this word outputs the same ordered list except the indices/subscripts have been relabelled/redefined/reindexed according to rule X2 (see notes).
zau'e'u
text affirmation/negation mode toggle
faumji
x1 is the result of evaluating mathematical object x2 at point/with input value x3 (ordered tuple)
grafetu
x1 is the graph on vertices/nodes x2 (set) and edges x3 (set of ordered or unordered tuples of vertices in x2) and with additional properties x4.
tamseingu
Target node x1 and primary subject node x4 belong to the same (single) strictly-directed, connected tree graph/network/hierarchy or are related by relation scheme x5 such that x1 has coordinates (x2, x and x4 has coordinates (0, 0) according to the labelling scheme which is described in the notes hereof.