Pith Number

pith:IBPCQ7I4

pith:2011:IBPCQ7I4FTZDULVPDP52WWPPJ6

not attested not anchored not stored refs pending

On the Topologies on ind-Varieties and related Irreducibility Questions

Immanuel Stampfli

arxiv:1109.4088 v3 · 2011-09-19 · 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{IBPCQ7I4FTZDULVPDP52WWPPJ6}

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	2026-05-18T00:57:05.198474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

405e287d1c2cf23a2eaf1bfbab59ef4f9be92bd77e97e89260e4907b59525c1b

Aliases

arxiv: 1109.4088 · arxiv_version: 1109.4088v3 · doi: 10.48550/arxiv.1109.4088 · pith_short_12: IBPCQ7I4FTZD · pith_short_16: IBPCQ7I4FTZDULVP · pith_short_8: IBPCQ7I4

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/IBPCQ7I4FTZDULVPDP52WWPPJ6 \
  | 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: 405e287d1c2cf23a2eaf1bfbab59ef4f9be92bd77e97e89260e4907b59525c1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bdb430e2f25f1cc18c9b045f99eea0b447e13205df6744002b6a462ef6fc754",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-09-19T16:46:11Z",
    "title_canon_sha256": "7647137fe47678c04e279b5fb8d1ac661a6e607cecea144d6a62f9f83948246d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4088",
    "kind": "arxiv",
    "version": 3
  }
}