Pith Number

pith:6STNXT76

pith:2008:6STNXT76MW2VVCWBO7POODO4TH

not attested not anchored not stored refs pending

Real Homotopy Theory of Semi-Algebraic Sets

Ismar Volic, Pascal Lambrechts, Robert Hardt, Victor Tourtchine

arxiv:0806.0476 v3 · 2008-06-03 · math.AT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6STNXT76MW2VVCWBO7POODO4TH}

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	2026-05-18T02:41:51.639378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4a6dbcffe65b55a8ac177dee70ddc99df57911adfb8b3871d8488235da344a3

Aliases

arxiv: 0806.0476 · arxiv_version: 0806.0476v3 · doi: 10.48550/arxiv.0806.0476 · pith_short_12: 6STNXT76MW2V · pith_short_16: 6STNXT76MW2VVCWB · pith_short_8: 6STNXT76

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/6STNXT76MW2VVCWBO7POODO4TH \
  | 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: f4a6dbcffe65b55a8ac177dee70ddc99df57911adfb8b3871d8488235da344a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e66f4a6f566c12ce3dc53f8a7981484dffc26f35f26334ab4401bf1299c7022",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2008-06-03T09:36:37Z",
    "title_canon_sha256": "640cab9843b48582ec9dd440c220203f82089f69890b91660f0529257f6518b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.0476",
    "kind": "arxiv",
    "version": 3
  }
}