Pith Number

pith:E4Q4QSGA

pith:2019:E4Q4QSGALI5IKSRMTHSDJOGCYF

not attested not anchored not stored refs pending

Backward Reachability for Polynomial Systems on A Finite Horizon

Andrew Packard, He Yin, Murat Arcak, Peter Seiler

arxiv:1907.03225 v1 · 2019-07-07 · eess.SY · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E4Q4QSGALI5IKSRMTHSDJOGCYF}

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	2026-05-17T23:41:18.577289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2721c848c05a3a854a2c99e434b8c2c16030e4d15b52bdef220086ff78b9471c

Aliases

arxiv: 1907.03225 · arxiv_version: 1907.03225v1 · doi: 10.48550/arxiv.1907.03225 · pith_short_12: E4Q4QSGALI5I · pith_short_16: E4Q4QSGALI5IKSRM · pith_short_8: E4Q4QSGA

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/E4Q4QSGALI5IKSRMTHSDJOGCYF \
  | 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: 2721c848c05a3a854a2c99e434b8c2c16030e4d15b52bdef220086ff78b9471c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d368e83cea0b908675dacc2cfb2a0b3fbf45f2a39e3e9df8c17d641a5f96e965",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2019-07-07T06:00:05Z",
    "title_canon_sha256": "651206d2cc44d005f73a6cd3a08aea5e2b62eac8373a49246c51e277f3ef2a4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03225",
    "kind": "arxiv",
    "version": 1
  }
}