Pith Number

pith:HPYNHGTB

pith:2017:HPYNHGTBSYRVLHMDWNA72LWSIG

not attested not anchored not stored refs pending

A convergent relaxation of the Douglas-Rachford algorithm

Nguyen Hieu Thao

arxiv:1709.05984 v1 · 2017-09-18 · 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{HPYNHGTBSYRVLHMDWNA72LWSIG}

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	2026-05-18T00:34:58.573108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bf0d39a619623559d83b341fd2ed241bf2038e7ecab1ef5153216b8ba76b3b0

Aliases

arxiv: 1709.05984 · arxiv_version: 1709.05984v1 · doi: 10.48550/arxiv.1709.05984 · pith_short_12: HPYNHGTBSYRV · pith_short_16: HPYNHGTBSYRVLHMD · pith_short_8: HPYNHGTB

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/HPYNHGTBSYRVLHMDWNA72LWSIG \
  | 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: 3bf0d39a619623559d83b341fd2ed241bf2038e7ecab1ef5153216b8ba76b3b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c454022ff6788368ff7afe26a5d5411b7059606ced07cde7ece4f6bee2a300e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-09-18T14:46:39Z",
    "title_canon_sha256": "585332ec0a8dc62ffc62d51e025979170e32558ec9814d79532ee7d3f79e5be1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.05984",
    "kind": "arxiv",
    "version": 1
  }
}