Pith Number

pith:TDUX3ET3

pith:2019:TDUX3ET3IDRLIJZYQML5K5A55R

not attested not anchored not stored refs pending

Fibrations between finite topological spaces

Miguel Ottina, Nicol\'as Cianci

arxiv:1907.03972 v1 · 2019-07-09 · 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{TDUX3ET3IDRLIJZYQML5K5A55R}

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	2026-05-17T23:41:06.170508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98e97d927b40e2b427388317d5741dec4eed4a15209e8640722a93f2a532236b

Aliases

arxiv: 1907.03972 · arxiv_version: 1907.03972v1 · doi: 10.48550/arxiv.1907.03972 · pith_short_12: TDUX3ET3IDRL · pith_short_16: TDUX3ET3IDRLIJZY · pith_short_8: TDUX3ET3

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/TDUX3ET3IDRLIJZYQML5K5A55R \
  | 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: 98e97d927b40e2b427388317d5741dec4eed4a15209e8640722a93f2a532236b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "336c85036c5b574a4afe85c9b30fdadbeba2f525ffb08034954971ef86c95235",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-07-09T03:42:38Z",
    "title_canon_sha256": "372c9af668eb2d3ff7aa6fe38b9cf9640e8df4ad963692fa41b12ee2ca865a7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03972",
    "kind": "arxiv",
    "version": 1
  }
}