Pith Number

pith:DVYBQWAN

pith:2014:DVYBQWANEFPMNH4IMJ7JYOO5GZ

not attested not anchored not stored refs pending

Whitney functions determine the real homotopy type of a semi-analytic set

Bryce Chriestenson, Markus J. Pflaum

arxiv:1403.1627 v1 · 2014-03-07 · math.AT · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DVYBQWANEFPMNH4IMJ7JYOO5GZ}

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	2026-05-18T02:56:52.945233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d7018580d215ec69f88627e9c39dd3660ddf9050e4a1cde3d16e0412592b5ec

Aliases

arxiv: 1403.1627 · arxiv_version: 1403.1627v1 · doi: 10.48550/arxiv.1403.1627 · pith_short_12: DVYBQWANEFPM · pith_short_16: DVYBQWANEFPMNH4I · pith_short_8: DVYBQWAN

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/DVYBQWANEFPMNH4IMJ7JYOO5GZ \
  | 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: 1d7018580d215ec69f88627e9c39dd3660ddf9050e4a1cde3d16e0412592b5ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b47f443acf6e52b1161efda6a3621a19f90e5a53d88ccddd1cf4a49073c53303",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2014-03-07T00:49:34Z",
    "title_canon_sha256": "8a665e26012c17b47a5bb1227d41668be1a70890b085ffb41bd87047d1a8fc89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.1627",
    "kind": "arxiv",
    "version": 1
  }
}