Pith Number

pith:Z5ADYVRY

pith:2011:Z5ADYVRY764D6TNS2I2DTGF3C6

not attested not anchored not stored refs pending

Multitime controlled linear PDE systems

Constantin Udriste, Cristian Ghiu

arxiv:1201.0256 v1 · 2011-12-31 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z5ADYVRY764D6TNS2I2DTGF3C6}

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	2026-05-18T04:05:25.648550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf403c5638ffb83f4db2d2343998bb17bf4455982979738d3a3b64ab10c68fd6

Aliases

arxiv: 1201.0256 · arxiv_version: 1201.0256v1 · doi: 10.48550/arxiv.1201.0256 · pith_short_12: Z5ADYVRY764D · pith_short_16: Z5ADYVRY764D6TNS · pith_short_8: Z5ADYVRY

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/Z5ADYVRY764D6TNS2I2DTGF3C6 \
  | 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: cf403c5638ffb83f4db2d2343998bb17bf4455982979738d3a3b64ab10c68fd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33d0889b35ecec8942fecc5e856027e03c3fe833a022abf8180c1baca9477a73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-12-31T13:26:49Z",
    "title_canon_sha256": "dfebbb50010b8ceb8521fd59894d76b4dc8888a2e25bde72b35d2511a3e3fa1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0256",
    "kind": "arxiv",
    "version": 1
  }
}