Pith Number

pith:ZJ63TR3E

pith:2019:ZJ63TR3EVVRMGKTWEMMGROFJ3P

not attested not anchored not stored refs pending

Regular coverings and fundamental groupoids of Alexandroff spaces

Nicol\'as Cianci

arxiv:1907.02624 v1 · 2019-07-04 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZJ63TR3EVVRMGKTWEMMGROFJ3P}

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.

Cited by

1 paper in Pith

Homology of posets with functor coefficients and its relation to Khovanov homology of knots

Receipt and verification

First computed	2026-05-17T23:41:23.726954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca7db9c764ad62c32a76231868b8a9dbe4fd1ff4e529ecf5cfb4c22d6fbce7c4

Aliases

arxiv: 1907.02624 · arxiv_version: 1907.02624v1 · doi: 10.48550/arxiv.1907.02624 · pith_short_12: ZJ63TR3EVVRM · pith_short_16: ZJ63TR3EVVRMGKTW · pith_short_8: ZJ63TR3E

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/ZJ63TR3EVVRMGKTWEMMGROFJ3P \
  | 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: ca7db9c764ad62c32a76231868b8a9dbe4fd1ff4e529ecf5cfb4c22d6fbce7c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a779f5f70227da505ba5ec47340270127da0c511bc15fae9ed56b82459ee599e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-07-04T23:59:15Z",
    "title_canon_sha256": "1761f9758e9229fdcade92008926653ec9348d8fe8db66ac94e8101ddb0c4b81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02624",
    "kind": "arxiv",
    "version": 1
  }
}