Pith Number

pith:K2QXI4PT

pith:2018:K2QXI4PTRWWTXKC7LPQ3ZMEPEJ

not attested not anchored not stored refs pending

On zigzag maps and the path category of an inverse semigroup

Allan Donsig, David Milan, Hannah King, Jennifer Gensler, Ronen Wdowinski

arxiv:1811.04124 v1 · 2018-11-09 · math.GR · math.OA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K2QXI4PTRWWTXKC7LPQ3ZMEPEJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:01:06.275104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56a17471f38dad3ba85f5be1bcb08f22615747bfb4ecd4fc4f96ebf5b81bfab5

Aliases

arxiv: 1811.04124 · arxiv_version: 1811.04124v1 · doi: 10.48550/arxiv.1811.04124 · pith_short_12: K2QXI4PTRWWT · pith_short_16: K2QXI4PTRWWTXKC7 · pith_short_8: K2QXI4PT

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/K2QXI4PTRWWTXKC7LPQ3ZMEPEJ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 56a17471f38dad3ba85f5be1bcb08f22615747bfb4ecd4fc4f96ebf5b81bfab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9b5087a5be4ce47c65398a86550e7cdbf3b9aa4a8a2229bec43bbd92cce7ed1",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2018-11-09T20:14:10Z",
    "title_canon_sha256": "312ad94c20d6fcd0b56d60e9779a8d54feaf890aada88c5c3183d761f2b5065c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04124",
    "kind": "arxiv",
    "version": 1
  }
}