Pith Number

pith:4PSEALYU

pith:2011:4PSEALYUWEEG6AO2RH3EW3NAA5

not attested not anchored not stored refs pending

Deciding polyhedrality of spectrahedra

Avinash Bhardwaj, Philipp Rostalski, Raman Sanyal

arxiv:1102.4367 v3 · 2011-02-21 · math.OC · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4PSEALYUWEEG6AO2RH3EW3NAA5}

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	2026-05-18T01:36:36.310334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3e4402f14b1086f01da89f64b6da0074cbddc1a6e9559d8b438578ec34e005f

Aliases

arxiv: 1102.4367 · arxiv_version: 1102.4367v3 · doi: 10.48550/arxiv.1102.4367 · pith_short_12: 4PSEALYUWEEG · pith_short_16: 4PSEALYUWEEG6AO2 · pith_short_8: 4PSEALYU

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/4PSEALYUWEEG6AO2RH3EW3NAA5 \
  | 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: e3e4402f14b1086f01da89f64b6da0074cbddc1a6e9559d8b438578ec34e005f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26442607fd0646f96a2cb73c2aa7c84442cc0959616d6bf239d4a749230a2fe5",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-02-21T23:33:30Z",
    "title_canon_sha256": "3e3157b99fbb5fa1d4f73bb094ecd39197d20b0ff2f5af4470e23beda1b48981"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.4367",
    "kind": "arxiv",
    "version": 3
  }
}