Pith Number

pith:YPBBVEHY

pith:2008:YPBBVEHYYKDILKUPJ6GCWUDP2D

not attested not anchored not stored refs pending

Projectivity of analytic Hilbert and Kaehler quotients

Daniel Greb

arxiv:0805.3973 v2 · 2008-05-26 · math.AG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YPBBVEHYYKDILKUPJ6GCWUDP2D}

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	2026-05-18T04:24:35.584452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3c21a90f8c28685aa8f4f8c2b506fd0dcec77cb88551d84d6dc2dda44f9aee7

Aliases

arxiv: 0805.3973 · arxiv_version: 0805.3973v2 · doi: 10.48550/arxiv.0805.3973 · pith_short_12: YPBBVEHYYKDI · pith_short_16: YPBBVEHYYKDILKUP · pith_short_8: YPBBVEHY

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/YPBBVEHYYKDILKUPJ6GCWUDP2D \
  | 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: c3c21a90f8c28685aa8f4f8c2b506fd0dcec77cb88551d84d6dc2dda44f9aee7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5fbb17992a5c9fe6e055fc93537cf3c0b373a8b7a479e271e4be86d5a2869fa",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-05-26T18:41:57Z",
    "title_canon_sha256": "a1cbbe6cf654c3a1d188d49c7bb819b4436cb7f5035de963dd4d0141fb42640e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.3973",
    "kind": "arxiv",
    "version": 2
  }
}