Pith Number

pith:BF6HL2QG

pith:2018:BF6HL2QG2TLZECP4BG2SMKI25L

not attested not anchored not stored refs pending

A simplification problem in manifold theory

Bj{\o}rn Jahren, Jean-Claude Hausmann

arxiv:1802.03186 v3 · 2018-02-09 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BF6HL2QG2TLZECP4BG2SMKI25L}

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	2026-05-18T00:06:46.264253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

097c75ea06d4d79209fc09b526291aeac988bf28b093ce3b4147da062bd2c9fb

Aliases

arxiv: 1802.03186 · arxiv_version: 1802.03186v3 · doi: 10.48550/arxiv.1802.03186 · pith_short_12: BF6HL2QG2TLZ · pith_short_16: BF6HL2QG2TLZECP4 · pith_short_8: BF6HL2QG

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/BF6HL2QG2TLZECP4BG2SMKI25L \
  | 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: 097c75ea06d4d79209fc09b526291aeac988bf28b093ce3b4147da062bd2c9fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ad2af0f581d44c9a49184e68679351b769d591b042e658f7abac2359da209c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-02-09T10:13:47Z",
    "title_canon_sha256": "0c5e55ce7f79d84a9d8533bcd5037676f8aa9d3111482930798769b3aed74621"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03186",
    "kind": "arxiv",
    "version": 3
  }
}