Pith Number

pith:T6IJRZ7P

pith:2017:T6IJRZ7PCE5DXWDSZXFBEF3DTT

not attested not anchored not stored refs pending

Error Estimates for Sparse Optimal Control Problems by Piecewise Linear Finite Element Approximation

Bo Chen, Bo Yu, Xiaoliang Song

arxiv:1709.09539 v1 · 2017-09-26 · math.OC

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

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	2026-05-18T00:34:11.391131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f9098e7ef113a3bd872cdca1217639cce9cb830a6f1f1cb63e8894c8f9b2ef5

Aliases

arxiv: 1709.09539 · arxiv_version: 1709.09539v1 · doi: 10.48550/arxiv.1709.09539 · pith_short_12: T6IJRZ7PCE5D · pith_short_16: T6IJRZ7PCE5DXWDS · pith_short_8: T6IJRZ7P

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/T6IJRZ7PCE5DXWDSZXFBEF3DTT \
  | 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: 9f9098e7ef113a3bd872cdca1217639cce9cb830a6f1f1cb63e8894c8f9b2ef5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a13f23726a9138f23dad0a4e4f008d7b5439b0d8dbc0ac26c991e620158a54e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-09-26T04:47:09Z",
    "title_canon_sha256": "a28dd0b2c1176dcc368fe2a8966bfd7631e296a8d3cab33355d8bc9a71ee7093"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09539",
    "kind": "arxiv",
    "version": 1
  }
}