Pith Number

pith:XUIQC4GQ

pith:2009:XUIQC4GQXBIDKYWWDQ77ERYLGF

not attested not anchored not stored refs pending

Semidefinite programming, harmonic analysis and coding theory

Christine Bachoc (IMB)

arxiv:0909.4767 v2 · 2009-09-25 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XUIQC4GQXBIDKYWWDQ77ERYLGF}

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	2026-05-18T04:41:15.382781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd110170d0b8503562d61c3ff2470b31684ce7372748ffcd07faa6456d34e013

Aliases

arxiv: 0909.4767 · arxiv_version: 0909.4767v2 · doi: 10.48550/arxiv.0909.4767 · pith_short_12: XUIQC4GQXBID · pith_short_16: XUIQC4GQXBIDKYWW · pith_short_8: XUIQC4GQ

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/XUIQC4GQXBIDKYWWDQ77ERYLGF \
  | 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: bd110170d0b8503562d61c3ff2470b31684ce7372748ffcd07faa6456d34e013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "651264a5a18924f70d83c72838e57c17b2d6736b1b10c5f8d7cf5949b231d5e8",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-09-25T19:04:18Z",
    "title_canon_sha256": "eeef60ec56092fcab0fd210f9ab02a62c68734334f4a5cedda13a0371b4a5b45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4767",
    "kind": "arxiv",
    "version": 2
  }
}