Pith Number

pith:2UDHCBFQ

pith:2026:2UDHCBFQUAD25G2CMVNJCDCH7P

not attested not anchored not stored refs pending

Efficient Algorithms for Interdicting Facilities in Trees and Bounded Treewidth Graphs

Ali Abbasi, Eli Friedman, Leana Golubchik, Marco Paolieri, Samir Khuller

arxiv:2605.27998 v1 · 2026-05-27 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2UDHCBFQUAD25G2CMVNJCDCH7P}

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	2026-05-28T01:04:55.632829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5067104b0a007ae9b42655a910c47fbd8a9413a1909540a5d58718979efb0f4

Aliases

arxiv: 2605.27998 · arxiv_version: 2605.27998v1 · doi: 10.48550/arxiv.2605.27998 · pith_short_12: 2UDHCBFQUAD2 · pith_short_16: 2UDHCBFQUAD25G2C · pith_short_8: 2UDHCBFQ

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/2UDHCBFQUAD25G2CMVNJCDCH7P \
  | 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: d5067104b0a007ae9b42655a910c47fbd8a9413a1909540a5d58718979efb0f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7927130626abecd87a7e5559416c54ec01205ebcf89a7bbc84c0519d03eeb9a3",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2026-05-27T05:41:29Z",
    "title_canon_sha256": "393f3185045749f042a844b3f1be3625a06e574dfe4376aa4141f20d6417b092"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.27998",
    "kind": "arxiv",
    "version": 1
  }
}