Pith Number

pith:74QTHW2S

pith:2006:74QTHW2SSNCTLWY7JIGWGHM5FO

not attested not anchored not stored refs pending

On the Homotopy Type and the Fundamental Crossed Complex of the Skeletal Filtration of a CW-Complex

Jo\~ao Faria Martins

arxiv:math/0605364 v1 · 2006-05-14 · math.GT · 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{74QTHW2SSNCTLWY7JIGWGHM5FO}

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	2026-05-18T00:44:04.301827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff2133db52934535db1f4a0d631d9d2bafe7136630463b9e6065b634a4eb818f

Aliases

arxiv: math/0605364 · arxiv_version: math/0605364v1 · doi: 10.48550/arxiv.math/0605364 · pith_short_12: 74QTHW2SSNCT · pith_short_16: 74QTHW2SSNCTLWY7 · pith_short_8: 74QTHW2S

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/74QTHW2SSNCTLWY7JIGWGHM5FO \
  | 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: ff2133db52934535db1f4a0d631d9d2bafe7136630463b9e6065b634a4eb818f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b209d2f11a0b33d6b1e5e2eb83bc9dbafadc9d5c1dce99e6cd097d500430643",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2006-05-14T12:33:20Z",
    "title_canon_sha256": "04f153022b745d2525f74ccecc1aa90832a03aa85b6a3bee6d7ca1960eaf4f49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0605364",
    "kind": "arxiv",
    "version": 1
  }
}