Pith Number

pith:RRTNIWPL

pith:2015:RRTNIWPLUWKQI2XHAPBPTD4X5T

not attested not anchored not stored refs pending

Weakly chained matrices, policy iteration, and impulse control

Parsiad Azimzadeh, Peter A. Forsyth

arxiv:1510.03928 v4 · 2015-10-13 · math.NA · q-fin.CP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RRTNIWPLUWKQI2XHAPBPTD4X5T}

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	2026-05-18T00:34:31.882141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c66d459eba595046ae703c2f98f97ecc9c99574c854a96d2ce4db1ab1ebaa54

Aliases

arxiv: 1510.03928 · arxiv_version: 1510.03928v4 · doi: 10.48550/arxiv.1510.03928 · pith_short_12: RRTNIWPLUWKQ · pith_short_16: RRTNIWPLUWKQI2XH · pith_short_8: RRTNIWPL

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/RRTNIWPLUWKQI2XHAPBPTD4X5T \
  | 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: 8c66d459eba595046ae703c2f98f97ecc9c99574c854a96d2ce4db1ab1ebaa54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b9df374326a1e09d4325f2d3c0fbc917dfd9099edaf76113fae61b62fa14a01",
    "cross_cats_sorted": [
      "q-fin.CP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-10-13T23:30:58Z",
    "title_canon_sha256": "7c252643cf614cea4d60dc44a6c142a472145fc567f59a5b8beb7d44f06537e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.03928",
    "kind": "arxiv",
    "version": 4
  }
}