Pith Number

pith:LZ7SXCRF

pith:2015:LZ7SXCRFJSISJ3YZPJSEMUNKZP

not attested not anchored not stored refs pending

The rational sectional category of certain maps

J.G. Carrasquel-Vera

arxiv:1503.07314 v2 · 2015-03-25 · 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{LZ7SXCRFJSISJ3YZPJSEMUNKZP}

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	2026-05-18T01:17:20.548774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e7f2b8a254c9124ef197a644651aacbd7bbdfa4f2734c78216808d67b02343f

Aliases

arxiv: 1503.07314 · arxiv_version: 1503.07314v2 · doi: 10.48550/arxiv.1503.07314 · pith_short_12: LZ7SXCRFJSIS · pith_short_16: LZ7SXCRFJSISJ3YZ · pith_short_8: LZ7SXCRF

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/LZ7SXCRFJSISJ3YZPJSEMUNKZP \
  | 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: 5e7f2b8a254c9124ef197a644651aacbd7bbdfa4f2734c78216808d67b02343f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "303055a3f220abe533bc5536b59280da3915f6bbb865b6ff684fc8604d75305e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-03-25T09:43:19Z",
    "title_canon_sha256": "0947ab1fa5784c5069e3f493b422d3bd93d1101c3b5c37717fcf7880903dae45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07314",
    "kind": "arxiv",
    "version": 2
  }
}