Pith Number

pith:O2J2KV2V

pith:2008:O2J2KV2VB3DX4DTA77W4VYUQGR

not attested not anchored not stored refs pending

Sums of squares and moment problems in equivariant situations

Claus Scheiderer, Jaka Cimpric, Salma Kuhlmann

arxiv:0808.0034 v1 · 2008-08-01 · 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{O2J2KV2VB3DX4DTA77W4VYUQGR}

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	2026-05-18T03:37:19.273206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7693a557550ec77e0e60ffedcae290344daf233f1aad136f7ec9bac37b808186

Aliases

arxiv: 0808.0034 · arxiv_version: 0808.0034v1 · doi: 10.48550/arxiv.0808.0034 · pith_short_12: O2J2KV2VB3DX · pith_short_16: O2J2KV2VB3DX4DTA · pith_short_8: O2J2KV2V

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/O2J2KV2VB3DX4DTA77W4VYUQGR \
  | 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: 7693a557550ec77e0e60ffedcae290344daf233f1aad136f7ec9bac37b808186

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b068d08b6c57658592f2d8aedf6396b9e7f35fe1365a118af9a8ef95208b0dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-08-01T07:59:38Z",
    "title_canon_sha256": "18cb63b5af0d27b05e7a24f5d983e3a549cbeccd0f0121d3fdfb1d230d5ef7e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.0034",
    "kind": "arxiv",
    "version": 1
  }
}