Pith Number

pith:ZOBCYPQL

pith:2013:ZOBCYPQLWKUV4QYRGWHQYVFARW

not attested not anchored not stored refs pending

Greedy Signal Space Methods for incoherence and beyond

Deanna Needell, Raja Giryes

arxiv:1309.2676 v3 · 2013-09-10 · math.NA · 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{ZOBCYPQLWKUV4QYRGWHQYVFARW}

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	2026-05-18T02:46:04.605794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb822c3e0bb2a95e4311358f0c54a08d852ab712b3d62ecf4078363bc9979d8c

Aliases

arxiv: 1309.2676 · arxiv_version: 1309.2676v3 · doi: 10.48550/arxiv.1309.2676 · pith_short_12: ZOBCYPQLWKUV · pith_short_16: ZOBCYPQLWKUV4QYR · pith_short_8: ZOBCYPQL

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/ZOBCYPQLWKUV4QYRGWHQYVFARW \
  | 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: cb822c3e0bb2a95e4311358f0c54a08d852ab712b3d62ecf4078363bc9979d8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8511a1a55ffb969625b43a4b90e9fda9fbd4fcf1c59745e88c27c25703531290",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-09-10T21:31:08Z",
    "title_canon_sha256": "3ce6f595ab814bb303934c4d741358ef137da586e4ca2a80d1f5a8abb31c3f3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2676",
    "kind": "arxiv",
    "version": 3
  }
}