Pith Number

pith:LHFYNX2Z

pith:2017:LHFYNX2ZF2JCWDGJ4ZSI6BWEDG

not attested not anchored not stored refs pending

The homotopy category of flat functors

Ali Zaghian, Esmaeil Hosseini

arxiv:1705.04930 v3 · 2017-05-14 · 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{LHFYNX2ZF2JCWDGJ4ZSI6BWEDG}

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	2026-05-18T00:30:28.272179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59cb86df592e922b0cc9e6648f06c419bdb0cf2c89e1faec12d046aa8e06770e

Aliases

arxiv: 1705.04930 · arxiv_version: 1705.04930v3 · doi: 10.48550/arxiv.1705.04930 · pith_short_12: LHFYNX2ZF2JC · pith_short_16: LHFYNX2ZF2JCWDGJ · pith_short_8: LHFYNX2Z

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/LHFYNX2ZF2JCWDGJ4ZSI6BWEDG \
  | 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: 59cb86df592e922b0cc9e6648f06c419bdb0cf2c89e1faec12d046aa8e06770e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f1a9007685f586c83d21b59254ca88135401410aec38ab85d97578daf09482c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-05-14T08:55:35Z",
    "title_canon_sha256": "e4641d83bb18b8aa5faf6c1917ac425d3f06ab3d2903c0e3f81480e6e446562c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04930",
    "kind": "arxiv",
    "version": 3
  }
}