Pith Number

pith:MDG3PQZJ

pith:2017:MDG3PQZJ4OZNRGM5CFBFE76ZU2

not attested not anchored not stored refs pending

Convex regularization of discrete-valued inverse problems

Christian Clason, Thi Bich Tram Do

arxiv:1707.01041 v3 · 2017-07-04 · 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{MDG3PQZJ4OZNRGM5CFBFE76ZU2}

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	2026-05-18T00:18:09.606065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60cdb7c329e3b2d8999d1142527fd9a69599a139d77ab517155e3105e8c140dd

Aliases

arxiv: 1707.01041 · arxiv_version: 1707.01041v3 · doi: 10.48550/arxiv.1707.01041 · pith_short_12: MDG3PQZJ4OZN · pith_short_16: MDG3PQZJ4OZNRGM5 · pith_short_8: MDG3PQZJ

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/MDG3PQZJ4OZNRGM5CFBFE76ZU2 \
  | 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: 60cdb7c329e3b2d8999d1142527fd9a69599a139d77ab517155e3105e8c140dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f205b370e6564de4e1a0d88de561befe17c8d741fa9b00b64e157a352576493",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-07-04T15:40:53Z",
    "title_canon_sha256": "b5a2fc77a36a8358701945ccbb0d0ce1d801dde546cf27d338dd7cce79cc5744"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01041",
    "kind": "arxiv",
    "version": 3
  }
}