Pith Number

pith:NWT2Y7XN

pith:2012:NWT2Y7XNUIPC3DPAVXEKQG6VXH

not attested not anchored not stored refs pending

Computing Topological Persistence for Simplicial Maps

Fengtao Fan, Tamal K. Dey, Yusu Wang

arxiv:1208.5018 v4 · 2012-08-24 · 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{NWT2Y7XNUIPC3DPAVXEKQG6VXH}

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	2026-05-18T02:55:39.390079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6da7ac7eeda21e2d8de0adc8a81bd5b9d5dc73001455f3eacab63a2a35435f6b

Aliases

arxiv: 1208.5018 · arxiv_version: 1208.5018v4 · doi: 10.48550/arxiv.1208.5018 · pith_short_12: NWT2Y7XNUIPC · pith_short_16: NWT2Y7XNUIPC3DPA · pith_short_8: NWT2Y7XN

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/NWT2Y7XNUIPC3DPAVXEKQG6VXH \
  | 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: 6da7ac7eeda21e2d8de0adc8a81bd5b9d5dc73001455f3eacab63a2a35435f6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d6df90cff8a1869c5ede344240efca7e6856ef4ac5628bfe1ef861038721786",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-08-24T17:46:21Z",
    "title_canon_sha256": "f3e3f13f2031aa1463cd553a98c098d8d361ce8274a2f78fd9c2bb921088d70e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5018",
    "kind": "arxiv",
    "version": 4
  }
}