Pith Number

pith:I77IVFYW

pith:2018:I77IVFYWJUBCNVQIZEF5QJNXI2

not attested not anchored not stored refs pending

Improved Topological Approximations by Digitization

Aruni Choudhary, Michael Kerber, Sharath Raghvendra

arxiv:1812.04966 v1 · 2018-12-12 · cs.CG · 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{I77IVFYWJUBCNVQIZEF5QJNXI2}

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	2026-05-17T23:58:26.777189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47fe8a97164d0226d608c90bd825b746b561c6d361d8ebd36b74b16f62772b45

Aliases

arxiv: 1812.04966 · arxiv_version: 1812.04966v1 · doi: 10.48550/arxiv.1812.04966 · pith_short_12: I77IVFYWJUBC · pith_short_16: I77IVFYWJUBCNVQI · pith_short_8: I77IVFYW

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/I77IVFYWJUBCNVQIZEF5QJNXI2 \
  | 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: 47fe8a97164d0226d608c90bd825b746b561c6d361d8ebd36b74b16f62772b45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7bc893fa9bdf18750a5c6fe48c9204ef358dca2b49853f018959fda119dd930",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-12-12T14:27:12Z",
    "title_canon_sha256": "62a41f496f8efe4d275665ca9b0a5fcb50bd75ad2cdb2d9e1c4e225fb92f3fdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.04966",
    "kind": "arxiv",
    "version": 1
  }
}