Pith Number

pith:HI4C34HL

pith:2013:HI4C34HLIRI5B4OFEKU6DT2Z6D

not attested not anchored not stored refs pending

Homotopy theory of smooth compactifications of algebraic varieties

Gereon Quick

arxiv:1305.1777 v2 · 2013-05-08 · math.AG · 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{HI4C34HLIRI5B4OFEKU6DT2Z6D}

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	2026-05-18T03:14:30.302739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a382df0eb4451d0f1c522a9e1cf59f0ed5874fcf9a693008b84d30ce7572761

Aliases

arxiv: 1305.1777 · arxiv_version: 1305.1777v2 · doi: 10.48550/arxiv.1305.1777 · pith_short_12: HI4C34HLIRI5 · pith_short_16: HI4C34HLIRI5B4OF · pith_short_8: HI4C34HL

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/HI4C34HLIRI5B4OFEKU6DT2Z6D \
  | 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: 3a382df0eb4451d0f1c522a9e1cf59f0ed5874fcf9a693008b84d30ce7572761

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "488a6851b4fbb4fd6da1d39166ee82b5b53513410edfc90afa5eb2712ace8195",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-05-08T11:03:47Z",
    "title_canon_sha256": "38095319285f7acb64c9e4c119d827768ed1e9b972cb74e6e8042421f6e9910f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1777",
    "kind": "arxiv",
    "version": 2
  }
}