Undergraduates in engineering and the physical sciences receive a thorough introduction to perturbation theory in this useful and accessible text. Students discover methods for obtaining an approximate solution of a mathematical problem by exploiting the presence of a small, dimensionless parameter — the smaller the parameter, the more accurate the approximate solution. Knowledge of perturbation theory offers a twofold benefit: approximate solutions often reveal the exact solution's essent...

COLE TURNER has studied conspiracy theories all his life, but he isn't prepared for what happens when he discovers that all of them are true, from the JFK Assassination to Flat Earth Theory and Reptilian Shapeshifters. One organization has been covering them up for generations. What is the deep, dark secret behind the Department of Truth? From bestselling writer JAMES TYNION IV (Batman, Something is Killing the Children) and breakout artist MARTIN SIMMONDS (Dying is Easy)! Collects THE DEP...

"The Dracula comic I've wanted all my life." __—ROBERT KIRKMAN (INVINCIBLE, THE WALKING DEAD) THE DEPARTMENT OF TRUTH creators JAMES TYNION IV (W0RLDTR33, Something is Killing the Children) and MARTIN SIMMONDS re-team to tell a new tale of the monster who started it all!? When Dr. John Seward admits a strange new patient named Renfield into his asylum, the madman tells stories of a demon who has taken residence next door. But as Dr. Seward attempts to apply logic to the impossible…his daug...

The final confrontation between Dr. Seward, Van Helsing, and Count Dracula is here! A fresh, engaging read for fans and newcomers alike, offering vivid storytelling, memorable characters, and a captivating journey from start to finish

For decades, the Department of Truth battled a secret war against its Soviet counterpart, the Ministry of Lies. Now, Cole Turner will have to face the consequences of his predecessors as the dark actions of the past unfurl before him… The fourth arc of the Eisner-nominated THE DEPARTMENT OF TRUTH from JAMES TYNION IV (Something is Killing the Children) and MARTIN SIMMONDS (Dying is Easy) is collected here! Collects THE DEPARTMENT OF TRUTH #18-22

As Lucy Weston suffers from a mysterious ailment, Dr. Seward calls upon Professor Abraham Van Helsing, and Dracula's thirst goes unquenched… A fresh, engaging read for fans and newcomers alike, offering vivid storytelling, memorable characters, and a captivating journey from start to finish

THE EISNER AWARD-NOMINATED SERIES IS RESURRECTED IN GLORIOUS BLACK & WHITE! From THE DEPARTMENT OF TRUTH creators JAMES TYNION IV (Exquisite Corpses, Something is Killing the Children) and MARTIN SIMMONDS present the first two issues of their acclaimed series in remastered stunning black & white in a tribute to the iconic film that changed the face of horror. When Dr. John Seward admits a strange new patient into his asylum, the madman tells stories of a demon who has taken residence next ...

Dr. John Seward struggles against the mounting evidence that his Lucy is under the thrall of a blood-sucking supernatural being! A fresh, engaging read for fans and newcomers alike, offering vivid storytelling, memorable characters, and a captivating journey from start to finish

FINAL ISSUE THE EISNER AWARD-NOMINATED SERIES CONCLUDES IN A GORGEOUS NEW FORMAT! Dr. John Seward struggles against the mounting evidence that his daughter is under the thrall of a blood-sucking supernatural being! But nothing can prepare him for the final confrontation with Van Helsing, and Count Dracula!

Fact: Martin Barker is the most dangerous man in America. Fact: Martin Barker is always two steps ahead of his opponents. Fact: As the Department of Truth makes a desperate play to preserve its existence, Martin Barker is about to change the face of the country forever.

MINISERIES PREMIERE THE BIGGEST NAMES IN COMICS RESURRECT THE MOST ICONIC MONSTERS! THE DEPARTMENT OF TRUTH creators JAMES TYNION IV (W0RLDTR33, Something is Killing the Children) and MARTIN SIMMONDS reteam for an extra-length miniseries about the monster who started it all! When Dr. John Seward admits a strange new patient into his asylum, the madman tells stories of a demon who has taken residence next door. But as Dr. Seward attempts to apply logic to the impossible…his surrogate daught...

Since the very first page of THE DEPARTMENT OF TRUTH , questions have swirled around Lee Harvey Oswald, the director of the DoT—his motivations, his allegiances, and his true identity. Now, in our landmark 25th issue, prepare for answers that will change everything. Starting with "what really happened in Dallas?" JAMES TYNION IV ( W0RLDTR33 , Nice House on the Lake and MARTIN SIMMONDS ( UNIVERSAL MONSTERS: DRACULA ) set their sights on a 25th-issue blowout for the multiple Eisner Award-nom...