Pith Number

pith:MXHUULWA

pith:2019:MXHUULWAB6FOEM2RIX6SUBMII2

not attested not anchored not stored refs pending

A note on flatness of some fiber type contractions

Eleonora Anna Romano

arxiv:1906.10911 v1 · 2019-06-26 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MXHUULWAB6FOEM2RIX6SUBMII2}

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	2026-05-17T23:42:10.555579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65cf4a2ec00f8ae2335145fd2a0588469177ee70ea7c75a325333f0e473e2177

Aliases

arxiv: 1906.10911 · arxiv_version: 1906.10911v1 · doi: 10.48550/arxiv.1906.10911 · pith_short_12: MXHUULWAB6FO · pith_short_16: MXHUULWAB6FOEM2R · pith_short_8: MXHUULWA

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/MXHUULWAB6FOEM2RIX6SUBMII2 \
  | 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: 65cf4a2ec00f8ae2335145fd2a0588469177ee70ea7c75a325333f0e473e2177

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03045140771cfbbb0a657c780c7afdf960d0656f3e14be32c28ae0518b5dfb13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-26T08:46:03Z",
    "title_canon_sha256": "e7ffab612869063891f1fb762eae96910b7c71b623b9e7e0f432f4fa7d2e7824"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.10911",
    "kind": "arxiv",
    "version": 1
  }
}