Pith Number

pith:EJNYIUIY

pith:2018:EJNYIUIYUYXPUVRY4KUW2XGLGH

not attested not anchored not stored refs pending

Extracting structured dynamical systems using sparse optimization with very few samples

Giang Tran, Hayden Schaeffer, Linan Zhang, Rachel Ward

arxiv:1805.04158 v1 · 2018-05-10 · cs.IT · cs.NA · 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{EJNYIUIYUYXPUVRY4KUW2XGLGH}

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	2026-05-18T00:16:13.458991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

225b845118a62efa5638e2a96d5ccb31d7a85af0b0b6aa6628e7cb49f70bdf90

Aliases

arxiv: 1805.04158 · arxiv_version: 1805.04158v1 · doi: 10.48550/arxiv.1805.04158 · pith_short_12: EJNYIUIYUYXP · pith_short_16: EJNYIUIYUYXPUVRY · pith_short_8: EJNYIUIY

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/EJNYIUIYUYXPUVRY4KUW2XGLGH \
  | 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: 225b845118a62efa5638e2a96d5ccb31d7a85af0b0b6aa6628e7cb49f70bdf90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ddf30f342427fb763abf5917f84541f2c63caa7aa73881a2e96d59ea16f844f",
    "cross_cats_sorted": [
      "cs.NA",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-05-10T20:11:52Z",
    "title_canon_sha256": "1aee25c83ea4220e4cb78ef6f71f3a3a7307cdd54d18315635aa7203049f56e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.04158",
    "kind": "arxiv",
    "version": 1
  }
}