Pith Number

pith:I2D4L7MC

pith:2016:I2D4L7MCAZB52MWQUT66RBEWBC

not attested not anchored not stored refs pending

A PTAS for the Steiner Forest Problem in Doubling Metrics

Shaofeng H.-C. Jiang, Shuguang Hu, T-H. Hubert Chan

arxiv:1608.06325 v1 · 2016-08-22 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I2D4L7MCAZB52MWQUT66RBEWBC}

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	2026-05-18T01:08:14.317347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4687c5fd820643dd32d0a4fde8849608a7e396a51c666c1b50a11260d63fb69b

Aliases

arxiv: 1608.06325 · arxiv_version: 1608.06325v1 · doi: 10.48550/arxiv.1608.06325 · pith_short_12: I2D4L7MCAZB5 · pith_short_16: I2D4L7MCAZB52MWQ · pith_short_8: I2D4L7MC

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/I2D4L7MCAZB52MWQUT66RBEWBC \
  | 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: 4687c5fd820643dd32d0a4fde8849608a7e396a51c666c1b50a11260d63fb69b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5236aa50747cb1a882545fb6470462b32a92bd1d707df6cc67b16d3d8e737937",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-08-22T21:50:07Z",
    "title_canon_sha256": "07f5fc5c50c6d34089843e48c013db57fbf4d2e43a0fcf5ed6061e05ce74419f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.06325",
    "kind": "arxiv",
    "version": 1
  }
}