Pith Number

pith:MPOEH6QU

pith:2016:MPOEH6QUIMTFE6LKRC2KOUQNPV

not attested not anchored not stored refs pending

Robust Nonnegative Sparse Recovery and the Nullspace Property of 0/1 Measurements

Peter Jung, Richard Kueng

arxiv:1603.07997 v2 · 2016-03-25 · cs.IT · math.IT

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	2026-05-18T00:49:00.071448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63dc43fa14432652796a88b4a7520d7d54455a3a33de15eec385aa81e54ad126

Aliases

arxiv: 1603.07997 · arxiv_version: 1603.07997v2 · doi: 10.48550/arxiv.1603.07997 · pith_short_12: MPOEH6QUIMTF · pith_short_16: MPOEH6QUIMTFE6LK · pith_short_8: MPOEH6QU

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/MPOEH6QUIMTFE6LKRC2KOUQNPV \
  | 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: 63dc43fa14432652796a88b4a7520d7d54455a3a33de15eec385aa81e54ad126

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca8fda96d5453b753b08732407a9d6ddf04954d3dc6e49b0cfc024589563c56f",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-03-25T19:56:34Z",
    "title_canon_sha256": "0217974143064a9453b4a45ff7b905dad58b9ac5102a819622492437df1f4efb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07997",
    "kind": "arxiv",
    "version": 2
  }
}