Pith Number

pith:OXAYSZI4

pith:2009:OXAYSZI44FYEM2OWOROMOZ66Y5

not attested not anchored not stored refs pending

Backwards uniqueness of the mean curvature flow

Hong Huang

arxiv:0907.0862 v4 · 2009-07-06 · math.DG · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OXAYSZI44FYEM2OWOROMOZ66Y5}

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	2026-05-17T23:56:43.333505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75c189651ce1704669d6745cc767dec76923eb63ab494acbe4ba68fb4bbadb27

Aliases

arxiv: 0907.0862 · arxiv_version: 0907.0862v4 · doi: 10.48550/arxiv.0907.0862 · pith_short_12: OXAYSZI44FYE · pith_short_16: OXAYSZI44FYEM2OW · pith_short_8: OXAYSZI4

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/OXAYSZI44FYEM2OWOROMOZ66Y5 \
  | 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: 75c189651ce1704669d6745cc767dec76923eb63ab494acbe4ba68fb4bbadb27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c3954c954f807d50814600eca31e2729cbccdafea4a86f093d1a73bbe3941d8",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-07-06T08:31:24Z",
    "title_canon_sha256": "13dfe19802767373df762bdcd62b5a306d0529eccf59109535a506dc380b02a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0862",
    "kind": "arxiv",
    "version": 4
  }
}