Pith Number

pith:HVYCB7Y6

pith:2018:HVYCB7Y6HJC7JYJH55O6KPQ2WP

not attested not anchored not stored refs pending

Projective Splitting with Forward Steps only Requires Continuity

Jonathan Eckstein, Patrick R. Johnstone

arxiv:1809.07180 v1 · 2018-09-17 · math.OC · cs.LG · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HVYCB7Y6HJC7JYJH55O6KPQ2WP}

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	2026-06-04T20:13:21.506580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d7020ff1e3a45f4e127ef5de53e1ab3fe8a28a189874119e505f92f9d892193

Aliases

arxiv: 1809.07180 · arxiv_version: 1809.07180v1 · doi: 10.48550/arxiv.1809.07180 · pith_short_12: HVYCB7Y6HJC7 · pith_short_16: HVYCB7Y6HJC7JYJH · pith_short_8: HVYCB7Y6

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/HVYCB7Y6HJC7JYJH55O6KPQ2WP \
  | 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: 3d7020ff1e3a45f4e127ef5de53e1ab3fe8a28a189874119e505f92f9d892193

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9dfa7a0664e58bb1ccfec856eb15f6a057a8e1bb5d65043e53c07a17481301b",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-09-17T18:11:28Z",
    "title_canon_sha256": "3e89a079c8a8860baff4d8a39e289c586b62f78540717b2762a001a40f45982c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07180",
    "kind": "arxiv",
    "version": 1
  }
}