Pith Number

pith:L77B22HS

pith:2013:L77B22HSE47CG3GPTCOBDMXUI3

not attested not anchored not stored refs pending

The homotopy theory of diffeological spaces

Enxin Wu, J. Daniel Christensen

arxiv:1311.6394 v4 · 2013-11-25 · 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{L77B22HSE47CG3GPTCOBDMXUI3}

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	2026-05-18T02:14:18.209075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ffe1d68f2273e236ccf989c11b2f446e191bf895b69265c847ed67c9739a017

Aliases

arxiv: 1311.6394 · arxiv_version: 1311.6394v4 · doi: 10.48550/arxiv.1311.6394 · pith_short_12: L77B22HSE47C · pith_short_16: L77B22HSE47CG3GP · pith_short_8: L77B22HS

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/L77B22HSE47CG3GPTCOBDMXUI3 \
  | 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: 5ffe1d68f2273e236ccf989c11b2f446e191bf895b69265c847ed67c9739a017

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5bc120786a5650cd5905d8fd8332f128f0979da2177969ee1640e8dc958f574",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-11-25T18:33:10Z",
    "title_canon_sha256": "10c4b6079fab0b97d7771aec30cfafc594b97d8e864088fd897bb16ee1e3bf8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6394",
    "kind": "arxiv",
    "version": 4
  }
}